{"product_id":"ronstan-series-50-all-purpose-double-block-with-swivel-head","title":"Ronstan Series 50 All Purpose Double Block with Swivel Head","description":"The Ronstan Series 50 All Purpose double block is engineered for high-performance sailing applications, featuring a self-lubricating Acetal polymer sheave that ensures minimal friction under both dynamic and static loads. Constructed with a grade 316 stainless steel load strap and durable, fibre-reinforced nylon cheeks, this block delivers exceptional longevity in demanding marine environments. The integrated slotted pin shackle effectively prevents line fouling, while the swivel head allows for full 360-degree rotation. Designed for versatility, it is an ideal choice for sheets, halyards, and control line systems on racing and cruising yachts.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBlock Type:\u003c\/strong\u003e Double\u003cbr\u003e\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 50mm\u003cbr\u003e\u003cstrong\u003eBreaking Load:\u003c\/strong\u003e 2000 kg\u003cbr\u003e\u003cstrong\u003eMax Working Load:\u003c\/strong\u003e 1000 kg\u003cbr\u003e\u003cstrong\u003eMax Rope Diameter:\u003c\/strong\u003e 12 mm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.255 kg\u003cbr\u003e\u003cstrong\u003ePin Diameter:\u003c\/strong\u003e 6 mm\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Grade 316 Stainless Steel, Fibre Reinforced Nylon\u003cbr\u003e\u003cbr\u003eItem Code. RF51200\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48278045458664,"sku":"9316800241231","price":82.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/9316800241231_1.jpg?v=1776722630","url":"https:\/\/boatharbourmarine.com.au\/products\/ronstan-series-50-all-purpose-double-block-with-swivel-head","provider":"Boat Harbour Marine","version":"1.0","type":"link"}