{"product_id":"ronstan-series-40-all-purpose-block-single-upright-lead","title":"Ronstan Series 40 All Purpose Upright Lead Block, 40mm Sheave","description":"\u003cp\u003e\u003cstrong\u003eOptimize your marine rigging\u003c\/strong\u003e with the Ronstan Series 40 All Purpose Upright Lead Block. Engineered for superior performance and durability, this low-profile block provides an efficient solution for routing halyards and other critical sail controls, especially in high-load applications on dinghies and small keelboats. Crafted with marine-grade materials, it ensures reliable operation and a long service life. Upgrade your sailboat's control systems today for enhanced responsiveness and sailing efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Strength Construction:\u003c\/strong\u003e Features a Grade 316 stainless steel load housing and fiber-reinforced nylon cheeks to withstand demanding marine environments and high static and dynamic loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth, Reliable Performance:\u003c\/strong\u003e The UV-stabilized acetal sheave runs smoothly on a polished stainless steel race, offering low friction and self-lubricating properties for consistent operation with rope or wire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Load Capacity:\u003c\/strong\u003e Boasts a Maximum Working Load (MWL) of 400 kg (880 lbs) and a Breaking Load (BL) of 1000 kg (2200 lbs), ensuring security in critical applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight Design:\u003c\/strong\u003e With a 40mm (1 9\/16 in) sheave diameter and a weight of just 59g (2.1 oz), it offers a minimal footprint and reduces overall rig weight.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIdeal for leading halyards at the mast base.\u003c\/li\u003e\n\u003cli\u003eSuitable for sheets, halyard tuning systems, backstay systems, and boom vangs on dinghies and smaller keelboats.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53275121647934,"sku":"CT-117302","price":49.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/3235\/8731\/files\/70602XL.jpg?v=1775339202","url":"https:\/\/www.tugandtow.com\/products\/ronstan-series-40-all-purpose-block-single-upright-lead","provider":"Tug and Tow","version":"1.0","type":"link"}