{"title":"Soft Attachment Blocks","description":"\u003cp\u003eSeldén’s soft attachment sailing blocks are lightweight, compact, and strong—ideal for performance rigging on modern sailboats. Designed for Dyneema® or textile loops, these blocks reduce weight and stress while maintaining high load capacity. Perfect for adjustable backstays, barber haulers, and high-performance control systems in both cruising and racing.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.seldenmast.com\/products\/deck-hardware\/#bm_blocks\" target=\"_blank\" rel=\"noopener\"\u003eLearn more about Seldén Blocks\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"20-mm-s20-soft-attachment-block-double-soft-attachment","title":"20 mm S20 Soft Attachment Block - Double, Soft Attachment","description":"\u003cp\u003eThe S20 Soft Attachment Double Block is a high-quality, lightweight block with a low-friction design. It features Acetal sheaves and ball bearings in stainless steel. Ideal for trim lines on smaller boats in racing conditions. Easy to install with lashing up to Ø4 mm. \u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 150 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 300 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 6 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634793378125,"sku":"402-101-61R","price":456.25,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_cef16093-f2af-4b57-8f04-006f670730b5.jpg?v=1761137493"},{"product_id":"20-mm-s20-soft-attachment-block-single-soft-attachment-stainless-sheave","title":"20 mm S20+ Soft Attachment Block - Single, Soft Attachment, Stainless sheave","description":"\u003cp\u003eUpgraded 20 mm single Soft Attachment Block featuring stainless steel sheave for higher working load. Ball bearings in stainless steel and a 2 mm \/ 550 mm Dyneema lashing included. A high-quality, lightweight block with a low-friction design.\u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 200 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 400 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 6 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634793410893,"sku":"402-101-65R","price":500.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_6ec929bc-b3ed-4f1e-a4d9-09f0f275d37f.jpg?v=1761137495"},{"product_id":"30-mm-s30-soft-attachment-block-single-soft-attachment","title":"30 mm S30 Soft Attachment Block - Single, Soft Attachment","description":"\u003cp\u003eThe S30 Single Soft Attachment Block is a high-quality, lightweight block with a low-friction design. It features an Acetal sheave and ball bearings in stainless steel. Easy to install with the included 2 mm Dyneema line. \u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 200 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 400 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 8 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634802028877,"sku":"403-101-60R","price":360.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_d90d403b-9756-44fa-a316-f1a0518eac58.jpg?v=1761137580"},{"product_id":"30-mm-s30-soft-attachment-block-double-soft-attachment","title":"30 mm S30 Soft Attachment Block - Double, Soft Attachment","description":"\u003cp\u003eThe S30 Double Soft Attachment Block is a high-quality, lightweight block with a low-friction design. It features an Acetal sheave and ball bearings in stainless steel. 2 mm Dyneema line is recommended for attaching the block. Not included.\u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 200 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 400 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 8 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634803437901,"sku":"403-101-61R","price":537.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_ee532d0f-61ec-4d2a-aa20-42412c05402a.jpg?v=1761137590"},{"product_id":"30-mm-s30-soft-attachment-block-single-soft-attachment-stainless-sheave","title":"30 mm S30+ Soft Attachment Block - Single, Soft Attachment, Stainless sheave","description":"\u003cp\u003eThe S30+ Soft Attachment Block is an upgraded 30 mm single Soft Attachment Block featuring stainless steel sheave for higher working load. Ball bearings in stainless steel and a 2 mm \/ 550 mm Dyneema lashing included. A high-quality, lightweight block with a low-friction design. \u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 325 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 650 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 8 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634803536205,"sku":"403-101-65R","price":597.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_ec4451aa-156e-461e-aadd-6b4addac231b.jpg?v=1761137594"},{"product_id":"40-mm-s40-soft-attachment-block-single-soft-attachment","title":"40 mm S40 Soft Attachment Block - Single, Soft Attachment","description":"\u003cp\u003eThe S40 Single Soft Attachment Block is a lightweight, high-performance block featuring a 40 mm sheave with stainless steel ball bearings for smooth operation under dynamic loads.\u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 250 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 10 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634810646861,"sku":"404-101-60R","price":497.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_12fceae1-7cf7-470c-a853-9c919c80cf41.jpg?v=1761137699"},{"product_id":"40-mm-s40-soft-attachment-block-double-soft-attachment","title":"40 mm S40 Soft Attachment Block - Double, Soft Attachment","description":"\u003cp\u003eThe S40 Double Soft Attachment Block features two 40 mm sheaves, designed for high-performance rigging under dynamic loads. Stainless steel ball bearings ensure smooth, friction-free operation, while the soft attachment system allows for secure and flexible rigging.\u003c\/p\u003e\u003cp\u003eIdeal for trim lines on smaller boats in racing conditions when a strong, tight, silent and flexible attachment is desired.  \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 250 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 10 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634812186957,"sku":"404-101-61R","price":763.75,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_d5df1e52-65d3-403e-93b2-47eef3d7d613.jpg?v=1761137710"},{"product_id":"40-mm-s40-soft-attachment-block-single-soft-attachment-stainless-sheave","title":"40 mm S40+ Soft Attachment Block - Single, Soft Attachment, Stainless Sheave","description":"\u003cp\u003eThe S40+ Soft Attachment Block features a 40 mm sheave in stainless steel for greater load-bearing capacity.\u003c\/p\u003e\u003cp\u003eStainless steel ball bearings ensure smooth operation, while the soft attachment system provides flexibility and strength. Ideal for moderate and dynamic loads with minimal friction combined with a soft and flexible assembly.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 400 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 800 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 10 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634812285261,"sku":"404-101-65R","price":676.25,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_1ba2660d-a2e4-4a42-a522-66fb3b7ac80e.jpg?v=1761137713"},{"product_id":"60-mm-roller-bearing-block-single-soft-attachment","title":"60 mm Roller Bearing Block - Single, Soft attachment","description":"\u003cp\u003eThe RBB60 Single Roller Bearing Block is built for extreme loads and dynamic applications, featuring a large 60 mm sheave. Made from machined black anodized aluminium and equipped with Torlon® roller bearings, this block provides superior strength and smooth operation.Polymer thrust bearings resist side loads, and a polymer washer insulates stainless from aluminium to prevent corrosion. \u003c\/p\u003e\u003cp\u003eThe block is made for Soft-attachment applications which means a lashing, preferably in Dyneema, that makes for a tight, non-rattling and noiceless installation. Ideal for German sheeting (gooseneck blocks), top block in a backstay cascade and more.\u003c\/p\u003e\u003cp\u003eSeldén Roller Bearing Blocks (RBB) is our performance range and ideal for spinnaker trim, backstays, halyards and German sheeting.\u003c\/p\u003e\u003cp\u003eThe blocks respond instantly to maintain delicate trimming and smooth manoeuvres for the trimmer to endure driving the boat forward for longer periods of time. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 1500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 3000 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 12 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634851574093,"sku":"406-201-32R","price":3062.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_1184bada-ad4d-4509-928a-cd0099f2a649.jpg?v=1761137945"},{"product_id":"a60-60-mm-automatic-ratchet-block-soft-attachment","title":"A60 - 60 mm Automatic Ratchet block, Soft-Attachment","description":"\u003cp\u003eTECHNICAL FEATURES\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe block is designed with lightweight Delrin ball bearings and comes with a composite sheave.\u003c\/li\u003e\n\u003cli\u003eThe sheave automatically changes from free-turning to ratchet when the load increases. The sailor decides when the automatic ratchet kicks in.\u003c\/li\u003e\n\u003cli\u003eThe switch-over point is set using an allen key to adjust a screw inside the sheave. Fast, simple, precise.\u003c\/li\u003e\n\u003cli\u003eMade for soft-attachment with a soft-shackle or a Dyneema lashing. \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 250 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 10 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634853998925,"sku":"406-350-54R","price":1227.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_072ca872-0513-49ab-99e6-bf8560f733c9.jpg?v=1761137973"},{"product_id":"a60-60-mm-automatic-ratchet-block-soft-attachment-aluminium-sheave","title":"A60+ - 60 mm Automatic Ratchet Block, Soft-attachment, Aluminium sheave","description":"\u003cp\u003eThe automatic A60+ ratchet block is designed for dynamic applications on dinghies and keelboats and features a ø60 mm aluminium sheave. Aluminium makes for more grip and the ability to cope with relative thin lines.\u003c\/p\u003e\u003cp\u003eTECHNICAL FEATURES\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe block is designed with lightweight Delrin ball bearings and comes with a composite sheave.\u003c\/li\u003e\n\u003cli\u003eThe sheave automatically changes from free-turning to ratchet when the load increases. The sailor decides when the automatic ratchet kicks in.\u003c\/li\u003e\n\u003cli\u003eThe switch-over point is set using an allen key to adjust a screw inside the sheave. Fast, simple, precise.\u003c\/li\u003e\n\u003cli\u003eMade for soft-attachment with a soft-shackle or a Dyneema lashing. \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 250 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 10 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634855735629,"sku":"406-360-54R","price":1717.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_f66807b8-c8ca-4edf-88d8-d78c370654e0.jpg?v=1761137993"},{"product_id":"80-mm-roller-bearing-block-single-soft-attachment","title":"80 mm Roller Bearing Block - Single, Soft attachment","description":"\u003cp\u003eThe RBB80 Single Roller Bearing Block is built for extreme loads and dynamic applications, featuring a large 80 mm sheave. Made from machined black anodized aluminium and equipped with Torlon® roller bearings, this block provides superior strength and smooth operation.Polymer thrust bearings resist side loads, and a polymer washer insulates stainless from aluminium to prevent corrosion. \u003c\/p\u003e\u003cp\u003eThe block is made for Soft-attachment applications which means a lashing, preferably in Dyneema, that makes for a tight, non-rattling and noiceless installation. Ideal for German sheeting (gooseneck blocks), top block in a backstay cascade and more.\u003c\/p\u003e\u003cp\u003eSeldén Roller Bearing Blocks (RBB) is our performance range and ideal for spinnaker trim, backstays, halyards and German sheeting.\u003c\/p\u003e\u003cp\u003eThe blocks respond instantly to maintain delicate trimming and smooth manoeuvres for the trimmer to endure driving the boat forward for longer periods of time. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 2500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 5000 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 14 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634874413389,"sku":"408-201-32R","price":5106.25,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_c00f1512-defe-4c9b-9858-b5e0d329ba6e.jpg?v=1761138184"},{"product_id":"100-mm-roller-bearing-block-single-soft-attachment","title":"100 mm Roller Bearing Block - Single, Soft attachment","description":"\u003cp\u003eThe RBB100 Single Roller Bearing Block is built for extreme loads and dynamic applications, featuring a large 100 mm sheave. Made from machined black anodized aluminium and equipped with Torlon® roller bearings, this block provides superior strength and smooth operation.Polymer thrust bearings resist side loads, and a polymer washer insulates stainless from aluminium to prevent corrosion. \u003c\/p\u003e\u003cp\u003eThe block is made for Soft-attachment applications which means a lashing, preferably in Dyneema, that makes for a tight, non-rattling and noiceless installation. Ideal for German sheeting (gooseneck blocks), top block in a backstay cascade and more.\u003c\/p\u003e\u003cp\u003eSeldén Roller Bearing Blocks (RBB) is our performance range and ideal for spinnaker trim, backstays, halyards and German sheeting.\u003c\/p\u003e\u003cp\u003eThe blocks respond instantly to maintain delicate trimming and smooth manoeuvres for the trimmer to endure driving the boat forward for longer periods of time. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 3500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 7000 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 16 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634878181709,"sku":"410-201-32R","price":8062.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_e22f42b0-8698-4b33-ad51-e55ec857f417.jpg?v=1761138233"},{"product_id":"130-mm-roller-bearing-block-single-soft-attachment","title":"130 mm Roller Bearing Block - Single, Soft attachment","description":"\u003cp\u003eThe RBB130 Single Roller Bearing Block is built for extreme loads and dynamic applications, featuring a large 130 mm sheave. Made from machined black anodized aluminium and equipped with Torlon® roller bearings, this block provides superior strength and smooth operation.Polymer thrust bearings resist side loads, and a polymer washer insulates stainless from aluminium to prevent corrosion. \u003c\/p\u003e\u003cp\u003eThe block is made for Soft-attachment applications which means a lashing, preferably in Dyneema, that makes for a tight, non-rattling and noiceless installation. Ideal for German sheeting (gooseneck blocks), top block in a backstay cascade and more.\u003c\/p\u003e\u003cp\u003eSeldén Roller Bearing Blocks (RBB) is our performance range and ideal for spinnaker trim, backstays, halyards and German sheeting.\u003c\/p\u003e\u003cp\u003eThe blocks respond instantly to maintain delicate trimming and smooth manoeuvres for the trimmer to endure driving the boat forward for longer periods of time. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 5000 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 10000 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 18 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":52634879525197,"sku":"413-201-32R","price":9562.5,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_b756bc32-11ee-4521-91ce-31120a79ba0b.jpg?v=1761138235"},{"product_id":"50-mm-roller-bearing-block-single-soft-attachment","title":"50 mm Roller Bearing Block - Single, Soft-attachment","description":"\u003cp\u003eRBB50 \u003c\/p\u003e\u003cp\u003eHigh-end soft-attachment block for tight and noiseless installations. \u003c\/p\u003e\u003cp\u003eFeaturing a 50 mm sheave, the RBB50 is a compact, high-performance block designed for demanding, dynamic applications such as spinnaker and gennaker sheets, barber haulers, self-tacking jibs, and other high-load control lines.\u003c\/p\u003e\u003cp\u003eThe RBB50 features machined, black anodized aluminium cheeks, Acetal ball bearings that absorb axial (side) loads, and Acetal roller bearings optimized for radial loads. This combination delivers smooth operation, high efficiency, and outstanding durability under load.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSafe working Load\u003c\/b\u003e: 750 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eBreaking Load\u003c\/b\u003e: 1500 \u003cem\u003ekg\u003c\/em\u003e\u003cbr\u003e\u003cb\u003eMax line size\u003c\/b\u003e: 10 \u003cem\u003emm\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Selden Mast AB","offers":[{"title":"Default Title","offer_id":54428240609613,"sku":"405-201-32R","price":1738.75,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/5701\/8445\/files\/index_d5d0b217-da65-4072-a7f9-d92d56286b4d.jpg?v=1785417685"}],"url":"https:\/\/shop.seldenmast.com\/collections\/blocks-soft-attachment-blocks.oembed","provider":"Seldén Yacht Store SE","version":"1.0","type":"link"}