{"product_id":"harken-57-mm-aluminum-low-load-block-swivel-becket","title":"Harken 57 mm Aluminum Low-Load Block — Swivel, Becket","description":"\u003cp\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\/p\u003e \u003cdiv id=\"gap-1486337275\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\"\u003e \u003c\/div\u003e \u003cdiv class=\"container section-title-container\"\u003e \u003ch3 class=\"section-title section-title-center\"\u003e \u003cb aria-hidden=\"true\"\u003e\u003c\/b\u003e\u003cspan class=\"section-title-main\"\u003eProduct Specifications\u003c\/span\u003e\u003cb aria-hidden=\"true\"\u003e\u003c\/b\u003e \u003c\/h3\u003e \u003c\/div\u003e \u003cp\u003eSheave Ø (mm) 57 mm\u003cbr\u003e Sheave Ø (in) 2 1\/4 in\u003cbr\u003e Length (mm) 140 mm\u003cbr\u003e Length (in) 5 1\/2 in\u003cbr\u003e Weight (g) 169 g\u003cbr\u003e Weight (oz) 5.95 oz\u003cbr\u003e Shackle pin Ø (mm) 6 mm\u003cbr\u003e Shackle pin Ø (in) 1\/4 in\u003cbr\u003e Maximum line Ø (mm) 12 mm\u003cbr\u003e Maximum line Ø (in) 7\/16 in\u003cbr\u003e Maximum working load (kg) 750 kg\u003cbr\u003e Maximum working load (lb) 1655 lb\u003cbr\u003e Breaking load (kg) 1500 kg\u003cbr\u003e Breaking load (lb) 3300 lb\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":51625583542609,"sku":"HKN-3229","price":272.78,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/www.sailrace.com-harken-57mm-aluminum-low-load-block-swivel-becket.jpg?v=1754725184","url":"https:\/\/www.sailrace.com\/en-caucasus\/products\/harken-57-mm-aluminum-low-load-block-swivel-becket","provider":"SailRACE","version":"1.0","type":"link"}