{"product_id":"quad","title":"40mm Quad Dynamic Block","description":"\u003cdiv\u003e\n\u003ch3\u003e40mm Quad Dynamic Swivel Block\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e40mm Quad Dynamic Swivel Block\u003c\/strong\u003e is a high-performance, four-sheave pulley designed for keelboats and dinghies. Manufactured from durable, lightweight glass-loaded nylon and featuring Allen's advanced Dynamic Bearing Technology, it delivers smooth, efficient line handling for high-purchase control systems.\u003c\/p\u003e\n\u003cp\u003eIdeal for applications requiring significant mechanical advantage, such as vangs, backstays, mainsheets, and other high-load control systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuad-sheave design for high-purchase systems and maximum mechanical advantage\u003c\/li\u003e\n\u003cli\u003eManufactured from durable, lightweight glass-loaded nylon\u003c\/li\u003e\n\u003cli\u003eIdeal for mainsheet, vang, backstay, 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 5mm shackle for flexible attachment and optimal load alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwivel Lock System\u003c\/strong\u003e allows the shackle to be locked in 90° orientations when required\u003c\/li\u003e\n\u003cli\u003eSwivel lock can be removed easily by undoing the shackle and removing it from the swivel pin\u003c\/li\u003e\n\u003cli\u003eDesigned for smooth, reliable performance in demanding marine environments\u003c\/li\u003e\n\u003cli\u003eIdeal for high-load purchase systems requiring efficient line handling and compact rigging solutions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196756369783,"sku":"A20404","price":153.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A20404.jpg?v=1781800438","url":"https:\/\/allenbrothers.co.uk\/products\/quad","provider":"Allen | Performance Sailing Hardware","version":"1.0","type":"link"}