{"product_id":"ha57alloblsw","title":"Harken 57mm Aluminum Low-Load Block — Swivel","description":"\u003ch2 id=\"itempage-captiontitle\"\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv\u003eHarken 57mm Aluminum Low-Load Block — Swivel\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Low-load blocks have red isolators. They use Torlon rollers and 316 stainless steel shackles. Standard blocks have 17-4 PH stainless headposts. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSheave Ø (mm)\u003c\/td\u003e\n\u003ctd\u003e57 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSheave Ø (in)\u003c\/td\u003e\n\u003ctd\u003e2 1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (mm)\u003c\/td\u003e\n\u003ctd\u003e119 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (in)\u003c\/td\u003e\n\u003ctd\u003e4 11\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (g)\u003c\/td\u003e\n\u003ctd\u003e154 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (oz)\u003c\/td\u003e\n\u003ctd\u003e5.44 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShackle pin Ø (mm)\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShackle pin Ø (in)\u003c\/td\u003e\n\u003ctd\u003e1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum line Ø (mm)\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum line Ø (in)\u003c\/td\u003e\n\u003ctd\u003e7\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum working load (kg)\u003c\/td\u003e\n\u003ctd\u003e750 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum working load (lb)\u003c\/td\u003e\n\u003ctd\u003e1655 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaking load (kg)\u003c\/td\u003e\n\u003ctd\u003e1500 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBreaking load (lb)\u003c\/td\u003e\n\u003ctd\u003e3300 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":41020737945703,"sku":"3226","price":211.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0575\/8366\/5255\/files\/3226_a6d7b8d0-4bfc-453b-b733-8945e8d14894.jpg?v=1777648020","url":"https:\/\/wayfinderoutdoor.com\/products\/ha57alloblsw","provider":"Wayfinder Outdoor","version":"1.0","type":"link"}