{"title":"Dynamic Blocks","description":"\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003eA range of dynamic ball bearing blocks engineered for high-performance sailing applications where low friction and maximum efficiency are essential. Designed to deliver exceptionally smooth rotation under load, these blocks ensure precise control and reduced effort across all key systems. Strong, lightweight, and built for demanding conditions, they are ideal for performance dinghies and racing setups where every ounce of efficiency matters.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"15mm-tii-on-block","title":"15mm Tii-On Block","description":"\u003cp\u003e15mm Dynamic Tii-On Block\u003c\/p\u003e\n\n\u003cp\u003eThe A2015-Tii 15mm ball bearing block is a compact, lightweight solution designed for versatile, low-friction control line systems. This version features an integrated top hole, allowing the block to be securely attached using rope or line—ideal for soft-attachment setups where flexibility and simplicity are key.\u003c\/p\u003e\n\n\u003cp\u003eEngineered for smooth performance, it incorporates stainless steel ball bearings running on a stainless steel axle, ensuring efficient load handling and minimal friction. The one-piece body is moulded from UV-stable, glass-loaded nylon, providing excellent strength and durability in demanding marine environments.\u003c\/p\u003e\n\n\u003cp\u003eIts low-profile, lightweight design makes it perfect for applications using thin lines where space and weight savings are essential. The tie-on configuration offers adaptability across a wide range of uses, from sail control systems to custom rigging solutions.\u003c\/p\u003e\n\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\n\u003cp\u003e15mm sheave for small-diameter lines\u003c\/p\u003e\n\n\u003cp\u003eStainless steel ball bearings for smooth, low-friction performance\u003c\/p\u003e\n\n\u003cp\u003eStainless steel axle for strength and durability\u003c\/p\u003e\n\n\u003cp\u003eOne-piece, UV-stable glass-loaded nylon construction\u003c\/p\u003e\n\n\u003cp\u003eIntegrated top hole for secure tie-on attachment\u003c\/p\u003e\n\n\u003cp\u003eLightweight, compact, low-profile design\u003c\/p\u003e\n\n\u003cp\u003eIdeal Applications:\n\u003cbr\u003eLeech lines, control lines, soft-attachment rigging, and other setups requiring a flexible, low-profile block attachment.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196735431031,"sku":"A2015-Tii","price":10.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2015Tii.jpg?v=1781800229"},{"product_id":"15mm-webbing-block","title":"15mm Webbing Block","description":"\u003cp\u003e15mm Dynamic Webbing Block\u003c\/p\u003e\n\n\u003cp\u003eThe A2015-WEB 15mm ball bearing block is a compact, lightweight solution designed for high-performance applications where space, weight, and efficiency matter. Engineered with precision, it features stainless steel ball bearings running on a stainless steel axle, delivering smooth, low-friction operation even under load.\u003c\/p\u003e\n\n\u003cp\u003eThe body is manufactured as a one-piece moulding from UV-stable, glass-loaded nylon, ensuring excellent strength, durability, and long-term resistance to harsh marine environments.\u003c\/p\u003e\n\n\u003cp\u003eDesigned specifically for integration with 10mm webbing straps, this block is ideal for sail leech lines where a clean, low-profile setup is essential. Its versatile design also makes it well-suited for use in winging harnesses, soft attachments, or sewn-in canopy systems.\u003c\/p\u003e\n\n\u003cp\u003eWith its minimal footprint and efficient performance, the A2015-WEB is perfect for thin control lines that demand reliable, friction-free running.\u003c\/p\u003e\n\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\n\u003cp\u003e15mm sheave for small-diameter lines\u003c\/p\u003e\n\n\u003cp\u003eStainless steel ball bearings for smooth, low-friction performance\u003c\/p\u003e\n\n\u003cp\u003eStainless steel axle for strength and longevity\u003c\/p\u003e\n\n\u003cp\u003eOne-piece, glass-loaded nylon construction for durability and UV resistance\u003c\/p\u003e\n\n\u003cp\u003eDesigned for 10mm webbing attachment\u003c\/p\u003e\n\n\u003cp\u003eUltra low-profile and lightweight design\u003c\/p\u003e\n\n\u003cp\u003eIdeal Applications:\u003c\/p\u003e\n\n\u003cp\u003eLeech lines, winging harnesses, sewn-in canopy systems, and other lightweight control line setups where compact efficiency is key.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196735562103,"sku":"A2015-WEB","price":10.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2015web.jpg?v=1781800230"},{"product_id":"a2020-single","title":"20mm Single Dynamic Block","description":"\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"___be36l80 fbotcpb fy77jfu f6dzj5z\"\u003e\n\u003cdiv role=\"article\" aria-labelledby=\"copilot-message-r22g-title copilot-message-r22g\" aria-setsize=\"4\" aria-posinset=\"4\" data-tabster='{\"groupper\":{\"tabbability\":2},\"focusable\":{}}' name=\"[object Object]\" class=\"fai-CopilotMessage r1f6yzd6 ___1fjo9g7 f1g2tzg5 fgct6un fy77jfu f2c7lf3\" tabindex=\"0\"\u003e\n\u003cdiv class=\"r17kselw\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv dir=\"auto\" id=\"copilot-message-r22g\" class=\"fai-CopilotMessage__content r1izxv8h ___7qar2c0 fcthzvy\"\u003e\n\u003cdiv\u003e\n\u003cdiv dir=\"auto\"\u003e\n\u003cdiv class=\"___1vve6yh f22iagw f1vx9l62 f122n59 f3bhgqh f1mnxvew fly5x3f\"\u003e\n\u003cdiv class=\"___j4vmuw0 f22iagw f1vx9l62 f1869bpl fly5x3f fbc6vix\"\u003e\n\u003cdiv data-testid=\"loading-message\" data-fui-focus-visible=\"\" tabindex=\"-1\"\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv id=\"response-idr22e\" class=\"___1yop6mf f336tjw f9ijwd5 fz7g6wx fod5ikn f1s184ao\" data-testid=\"lastChatMessage\"\u003e\n\u003cdiv class=\"___1peis63 f22iagw f1063pyq f6jr5hl f1c88k3p\"\u003e\n\u003cdiv class=\"___4htdyp0 fz7g6wx fy77jfu\"\u003e\n\u003cdiv dir=\"auto\" aria-hidden=\"false\" class=\"___1j4t0a1 f1lmfglv f1abmfm4\" data-testid=\"markdown-reply\" data-message-type=\"Chat\"\u003e\n\u003cdiv class=\"___nfp7g60 f22iagw f1vx9l62 fkmyikg fk15e71 f1k953kz f137keqj f1rncccw f1stllg3 f1w4kmmc f1tric3v f10dk5ic fx8cdsv f16nlwsl f1eookvz fhjrts3 fqugt2f f18d18k8 f1v1vhmp f1hdmul3 f198vjnp f2dshw1 fjpjndq fnmj2pj ffrrb40 f1mon110 fhajzam fimndk6 fxv4dng fb1rn9k f59wlhv f1xmfh30 f18yf5o5 fmr6chf fw8qy2q ff161sd f1qr7t77 f1yyogn1 foogchg fp5872b f1tpb8gf f1hdgrc8 f1vatr43 frkxccd f9pdzkb f158oiaz ft5kggy f5l4ui7 f13j03li f18xdoka f8off4e f1go6zfc f128n2ra f1jpxw2j f1lwd9n0 fy0b8hm f1g2633v fx4kvgi fkvolse f1gxrt3a f1os76ua f1js9cnw f1g87ej0 freluf8 f1yggaq6 f2i3chp f1151osp florpoh f35kzfz ftp9m57 f1e288vi fz62hnz fixvuys f1nmofwh fc1c6mv f18a2er7 fhvkrdl fhxnn68 f1oce4bo fvhlfan f7tc0t0 f1ngf1n2 ffrzq6x f1yjiq2m f1aqdgql f1huvaf f10ij78l f1k94sa4 fkmfumq f1jvzkyl f1eu24ob f1xbfc1f fmf0lwf f107dsy8 f3w566c f4648sl f13zpkng f7unjfp f8p1rz fzu6h1w f1i1bi6h f1smo7hi f1sk1xod f1kgogdq f1gjktkp ft608jz f1o9wiiv fg3xr24 fhd155k f1b8gl2e fg4b9ou flb4lo fdicbfk fgwcyh1 f1jbds0d f1fb9uea f1stuka4 fcrtu6g fwqh0xn f11w66yg f6e0e65 f1vvgu0 f1607507 fgct6un f1ec1nbe fg3fpv7 f1m9bycv f1ntoah8 f1b694rt faql4r2 fpjuhzh fmavl6h f1d9bsk fmzhlt0 f145l92p fwkyaqm f129obh1 f19la9g f127w39w fr0ux9m fxhidck f1cu4h9j f1wnbo7v f1eueg4z fy9c24f f1h2o91j f1iw08fq f19n0e5\"\u003e\n\u003ch3\u003e20mm Single Dynamic Block\u003c\/h3\u003e\n\u003cp\u003eA lightweight, strong, and low-friction pulley designed for dinghies, windsurfing, kitesurfing, and other applications using smaller diameter lines. Part of our Dynamic range, it's ideal for systems requiring constant sheave movement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Dynamic Bearings\u003c\/strong\u003e: Twin rows of stainless-steel ball bearings running on a stainless-steel rail for smooth operation, high load capacity, and long service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Strap Technology\u003c\/strong\u003e: Patented, coin-formed strap design for increased strength, durability, and rope-friendly performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Becket\u003c\/strong\u003e: Large central rivet provides a lightweight, rope-friendly attachment point, ideal for cascade systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196735660407,"sku":"A2020","price":11.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2020201-1.jpg?v=1781800232"},{"product_id":"linked-20-30mm-singles","title":"20mm \u0026 30mm Single Dynamic Blocks - Linked","description":"\u003ch3\u003eLinked 20mm \u0026amp; 30mm Single Blocks\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eLinked 20mm \u0026amp; 30mm Single Blocks\u003c\/strong\u003e combine our proven \u003cstrong\u003eA2020\u003c\/strong\u003e and \u003cstrong\u003eA2030 Dynamic Blocks\u003c\/strong\u003e into a single linked assembly, delivering smooth, efficient line handling in compact purchase systems. Part of our \u003cstrong\u003eDynamic range\u003c\/strong\u003e, these blocks are ideal for applications requiring constant sheave movement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLinked assembly utilising \u003cstrong\u003eA2020 and A2030 Dynamic Blocks\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow-friction, fast-rolling performance\u003c\/li\u003e\n\u003cli\u003eLightweight and durable construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Dynamic Bearing System\u003c\/strong\u003e with twin rows of stainless-steel ball bearings running on a stainless-steel rail for superior load capacity and longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Strap Technology\u003c\/strong\u003e provides enhanced strength, durability, and rope-friendly performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Beckets\u003c\/strong\u003e with large central rivets, offering lightweight and rope-friendly attachment points for cascade systems\u003c\/li\u003e\n\u003cli\u003eIdeal for control line and purchase systems requiring smooth, efficient operation\u003c\/li\u003e\n\u003cli\u003eSuitable for use with smaller diameter rope lines\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196735889783,"sku":"A2020-30","price":26.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2020-30.jpg?v=1781800232"},{"product_id":"a2020-4035-single-with-p-clip","title":"20mm Single Dynamic Block - P-Clip","description":"\u003cdiv\u003e\n\u003ch3\u003e20mm Single Dynamic Block With P-Clip\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e20mm Single Dynamic Block With P-Clip\u003c\/strong\u003e is a compact, low-friction pulley designed for smooth, fast-rolling performance. Lightweight yet strong, it is ideal for applications using smaller diameter lines. Part of our \u003cstrong\u003eDynamic range\u003c\/strong\u003e, it is best suited to systems that require constant sheave movement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-sheave design for smooth and efficient line handling\u003c\/li\u003e\n\u003cli\u003eLow-friction, fast-rolling performance\u003c\/li\u003e\n\u003cli\u003eLightweight and durable construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP-Clip Attachment\u003c\/strong\u003e for easy and secure fixing to a surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Dynamic Bearing System\u003c\/strong\u003e featuring twin rows of stainless-steel ball bearings running on a stainless-steel rail for superior load capacity and longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Strap Technology\u003c\/strong\u003e provides enhanced strength, durability, and rope-friendly performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Becket\u003c\/strong\u003e with a large central rivet, providing a lightweight and rope-friendly attachment point for cascade systems\u003c\/li\u003e\n\u003cli\u003eIdeal for applications requiring smooth, efficient line handling and fixed attachment points\u003c\/li\u003e\n\u003cli\u003eSuitable for use with smaller diameter rope lines in a wide range of marine and control line systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196735988087,"sku":"A2020-4035","price":14.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2020-4035.jpg?v=1781800233"},{"product_id":"a2020-4036-single-with-offset-lacing-eye","title":"20mm Single Dynamic Block - Offset Lacing Eye","description":"\u003ch3\u003e20mm Single Dynamic Block With Offset Lacing Eye\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e20mm Single Dynamic Block With Offset Lacing Eye\u003c\/strong\u003e is a compact, low-friction pulley designed for smooth, fast-rolling performance. Lightweight yet strong, it is ideal for applications using smaller diameter lines. Part of our \u003cstrong\u003eDynamic range\u003c\/strong\u003e, it is best suited to systems that require constant sheave movement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-sheave design for smooth and efficient line handling\u003c\/li\u003e\n\u003cli\u003eLow-friction, fast-rolling performance\u003c\/li\u003e\n\u003cli\u003eLightweight and durable construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffset Lacing Eye\u003c\/strong\u003e for easy and secure attachment to decks, fittings, and other surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented Dynamic Bearing System\u003c\/strong\u003e featuring twin rows of stainless-steel ball bearings running on a stainless-steel rail for superior load capacity and longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Strap Technology\u003c\/strong\u003e provides enhanced strength, durability, and rope-friendly performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Becket\u003c\/strong\u003e with a large central rivet, providing a lightweight and rope-friendly attachment point for cascade systems\u003c\/li\u003e\n\u003cli\u003eIdeal for applications requiring smooth, efficient line handling and fixed attachment points\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196736053623,"sku":"A2020-4036","price":16.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2020-4036-V2-1.jpg?v=1781800235"},{"product_id":"single-with-fork-head","title":"20mm Single Dynamic Block - Fork","description":"\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003e20mm Single Dynamic Block With Fork Head\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e20mm Single Dynamic Block With Fork Head\u003c\/strong\u003e is a compact, low-friction pulley designed for smooth, fast-rolling performance. 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