{"product_id":"high-load-single","title":"40mm Single High Load Block","description":"\u003ch3\u003e40mm Single High Load Swivel Block\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e40mm Single High Load Swivel Block\u003c\/strong\u003e is a high-performance pulley designed for keelboats and dinghies. Manufactured from glass-loaded nylon and featuring Allen's advanced Dynamic Bearing Technology, it delivers smooth, efficient line handling for mainsheets, jib sheets, spinnaker sheets, and control line systems.\u003c\/p\u003e\n\u003cp\u003eFitted with a \u003cstrong\u003estainless-steel high-load sheave\u003c\/strong\u003e, this version offers faster rolling speeds, lower friction, and compatibility with both rope and wire.\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\u003eManufactured from durable, lightweight glass-loaded nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Load Stainless-Steel Sheave\u003c\/strong\u003e for lower friction, faster rolling speeds, and improved durability\u003c\/li\u003e\n\u003cli\u003eSuitable for use with both rope and wire\u003c\/li\u003e\n\u003cli\u003eIdeal for mainsheet, jib sheet, spinnaker sheet, and keelboat control line applications\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\u003c\/li\u003e\n\u003cli\u003eCaged ball bearings for reduced friction and enhanced rolling performance\u003c\/li\u003e\n\u003cli\u003eSuperior load-carrying capability and long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° Swivel Head\u003c\/strong\u003e fitted with a 4mm shackle for flexible attachment and optimal load alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Central Becket Hole\u003c\/strong\u003e for use as a tie-off point in purchase systems\u003c\/li\u003e\n\u003cli\u003eDesigned for smooth, reliable performance in demanding marine environments\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196754731383,"sku":"A20401HL","price":59.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A20401HL.jpg?v=1781800421","url":"https:\/\/allenbrothers.co.uk\/products\/high-load-single","provider":"Allen | Performance Sailing Hardware","version":"1.0","type":"link"}