{"product_id":"seasure-25mm-double-block-with-shackle-00-21crd-marine-grade-stainless-steel","title":"SeaSure 25mm Double Block with Shackle 00.21CRD, Marine-Grade Stainless Steel","description":"\u003cp\u003e\u003cstrong\u003e25mm Double Block with Shackle\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 25mm plain bearing block range is one of SeaSure's oldest and best-selling ranges. The range uses marine-grade stainless steel side plates and rivets with an arnite (plastic) sheave, which is incredibly hard-wearing and light.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThis range could be used to create purchasing systems for lifting, garage door mechanisms, storage solutions, etc.\u003c\/li\u003e\n\u003cli\u003eThe 00.21 can be used to create a 4:1 purchase system to aid in lifting heavier objects and decrease the load on the rope\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMax Rope: 8mm\u003c\/li\u003e\n\u003cli\u003eBreaking Load: 1000kg\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe SeaSure 25mm Double Block with Shackle, part number 00.21CRD, is a compact plain-bearing block designed for lifting systems, storage solutions, garage door mechanisms, and other applications that use rope purchase systems. Its marine-grade stainless steel side plates and rivets provide a durable construction, while the lightweight, hard-wearing arnite plastic sheave supports smooth, practical operation.\u003c\/p\u003e\u003cp\u003eDesigned for rope systems requiring mechanical advantage, the SeaSure 00.21CRD can be used to create a 4:1 purchase system. This configuration helps make lifting heavier objects more manageable by reducing the load placed on the rope. With support for rope up to 8mm and a 1000kg breaking load, this double block is suited to a variety of equipment and utility applications where a compact block-and-shackle design is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble block with shackle:\u003c\/strong\u003e Provides a practical component for building rope-based lifting and purchase systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine-grade stainless steel construction:\u003c\/strong\u003e Stainless steel side plates and rivets support durable everyday use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArnite plastic sheave:\u003c\/strong\u003e Lightweight and hard-wearing for practical operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4:1 purchase capability:\u003c\/strong\u003e The 00.21CRD can be used to create a system that helps reduce the load on the rope when lifting heavier objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile applications:\u003c\/strong\u003e Suitable for lifting systems, garage door mechanisms, storage solutions, and similar rope-system projects.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e SeaSure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 00.21CRD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e 25mm double block with shackle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum rope size:\u003c\/strong\u003e 8mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreaking load:\u003c\/strong\u003e 1,000 kilograms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Marine-grade stainless steel side plates and rivets with an arnite plastic sheave\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the SeaSure 25mm Double Block with Shackle 00.21CRD for a durable, lightweight component when building practical rope purchase and lifting systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSEO Meta Description:\u003c\/strong\u003e Shop the SeaSure 25mm Double Block with Shackle 00.21CRD for lifting systems, 8mm rope, durable stainless steel, and a 1,000kg breaking load.\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"SeaSure","offers":[{"title":"Default Title","offer_id":44937105670233,"sku":"100418","price":40.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/100418XL.jpg?v=1789838630","url":"https:\/\/www.marinepartsonly.com\/products\/seasure-25mm-double-block-with-shackle-00-21crd-marine-grade-stainless-steel","provider":"Marine Parts Only","version":"1.0","type":"link"}