{"title":"Ronstan Special Purpose Blocks","description":"","products":[{"product_id":"ronstan-series-40-all-purpose-cheek-block","title":"Ronstan Series 40 All Purpose Cheek Block","description":"\u003cp\u003e\u003cstrong\u003eRonstan Series 40 All Purpose Cheek Block\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.\u003c\/p\u003e\n\u003cp\u003eCan be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Stackable with Ronstan Series 40 deck organisers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExceptionally high working loads.\u003c\/li\u003e\n\u003cli\u003eLow maintenance, long service life.\u003c\/li\u003e\n\u003cli\u003eSelf-lubricating sheave.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. Rope diameter (in): 1\/2\u003c\/li\u003e\n\u003cli\u003eSheave diameter (in): 1 9\/16\u003c\/li\u003e\n\u003cli\u003eFastener Ø (in): 1\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eU.V. stabilised Acetal sheaves\u003c\/li\u003e\n\u003cli\u003eImpact and U.V. resistant, fibre reinforced Nylon cheeks\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel bearing race\u003c\/li\u003e\n\u003cli\u003eAlloy cheek plates\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan Sailboat Hardware","offers":[{"title":"Default Title","offer_id":53594363036020,"sku":"RONRF41811","price":89.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RONRF41811-2__71832.jpg.1428984928.jpg?v=1761730334"},{"product_id":"ronstan-series-50-all-purpose-cheek-block","title":"Ronstan Series 50 All Purpose Cheek Block","description":"\u003cp\u003e\u003cstrong\u003eRonstan Series 50 All Purpose Cheek Block\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.\u003c\/p\u003e\n\u003cp\u003eCan be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 50% of the rated working load should be applied to the upper sheave. Mount with 3 x 6mm (1\/4\") fasteners (not supplied).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExceptionally high working loads.\u003c\/li\u003e\n\u003cli\u003eLow maintenance, long service life.\u003c\/li\u003e\n\u003cli\u003eSelf-lubricating Acetal polymer sheave ensures low friction and extreme durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. 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ON-OFF switching knob is fitted to both sides of the swivel blocks (one can be removed if desired). Ratchet blocks can be disassembled for sheave replacement with RF62000.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUnrivalled 20:1 holding power\u003c\/li\u003e\n\u003cli\u003eDual-sided On-Off switch\u003c\/li\u003e\n\u003cli\u003eAbility to operate On-Off switch under load\u003c\/li\u003e\n\u003cli\u003eLow friction ball bearing system\u003c\/li\u003e\n\u003cli\u003eLightweight\u003c\/li\u003e\n\u003cli\u003eCheek cut-outs for easy bearing maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. 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Unrivalled low weight is achieved by the use of a Torlon ratchet pawl, high-grade machined alloy sheave and black Acetal hubs and bearings. ON-OFF switching knob is fitted to both sides of the swivel blocks (one can be removed if desired). Ratchet blocks can be disassembled for sheave replacement with RF62000.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompositite C-Cleat and adustable cleat arm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe RF62175 Series 60 Ultimate Ratchet Block is fitted with our carbon reinforced C-Cleat for secure rope holding with low entry and exit efforts, and fairlead for fast action from any angle. Cleat arms are made of Grade 316 stainless steel and are adjustable for setting to your preferred cleating angle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUnrivalled 20:1 holding power\u003c\/li\u003e\n\u003cli\u003eDual sided On-Off switch\u003c\/li\u003e\n\u003cli\u003eAbility to operate On-Off switch under load\u003c\/li\u003e\n\u003cli\u003eLow friction ball bearing system\u003c\/li\u003e\n\u003cli\u003eLightweight\u003c\/li\u003e\n\u003cli\u003eCheek cut-outs for easy bearing maintenance\u003c\/li\u003e\n\u003cli\u003eAdjustable C-Cleat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. 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allows block to swivel through 360 degrees.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eU.V. stabilised Acetal sheaves.\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel frame and load strap.\u003c\/li\u003e\n\u003cli\u003eSoft thermoplastic rubber cheeks.\u003c\/li\u003e\n\u003cli\u003eInvestment cast Grade 15-5PH stainless steel snap shackle\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Ronstan Sailboat Hardware","offers":[{"title":"Default Title","offer_id":53594554106228,"sku":"RONRF6721","price":272.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RONRF6721-2__19456.jpg.1428984928.jpg?v=1761730646"},{"product_id":"ronstan-snatch-block-alloy-sheave-152mm-loa","title":"Ronstan Snatch Block, Alloy Sheave, 152mm LOA","description":"\u003cp\u003e\u003cstrong\u003eRonstan Snatch Block, Alloy Sheave, 152mm 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Hardware","offers":[{"title":"Default Title","offer_id":53594554925428,"sku":"RONRF6730","price":291.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RONRF6730-2__14670.jpg.1428984928.jpg?v=1761730647"},{"product_id":"ronstan-snatch-block-alloy-sheave-173mm-loa","title":"Ronstan Snatch Block, Alloy Sheave, 173mm LOA","description":"\u003cp\u003e\u003cstrong\u003eRonstan Snatch Block, Alloy Sheave, 173mm LOA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTrunnion snap shackle provides the same swivel action and offers additional articulation from side to side.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasily operated latch mechanism.\u003c\/li\u003e\n\u003cli\u003eLightweight.\u003c\/li\u003e\n\u003cli\u003eSoft resilient cheeks reduce clatter and protect gelcoat and painted surfaces.\u003c\/li\u003e\n\u003cli\u003eSnap shackle head 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