{"product_id":"ronstan-series-50-all-purpose-fiddle-block-with-becket-and-cleat-rf51530","title":"Ronstan Series 50 All Purpose Fiddle Block with Becket and Cleat RF51530","description":"\u003cp\u003e\u003cstrong\u003eSeries 50 All Purpose Block - Fiddle - Becket - Cleat\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\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\u003cli\u003eCaptive Lock universal head\u003c\/li\u003e\n\u003cli\u003eSlotted pin shackle eliminates fouled lines\u003c\/li\u003e\n\u003cli\u003eSnap fit removable becket pin\u003c\/li\u003e\n\u003cli\u003eMulti-position cleat arm\u003c\/li\u003e\n\u003cli\u003eSpare Parts - RF51010 Replacement Becket Pin, RF150 Shackle\u003c\/li\u003e\n\u003c\/ul\u003e\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.Captive Lock universal head can be fixed in either of two planes, or free to swivel as required. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting and is \u003cstrong\u003ei\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAppllications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)\u003c\/li\u003e\n\u003cli\u003eS60 - on boats up to 12m (40ft)\u003c\/li\u003e\n\u003cli\u003eIdeal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGrade 316 stainless steel load strap\u003c\/li\u003e\n\u003cli\u003eImpact and UV resistant, fiber reinforced Nylon cheeks\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Ronstan Series 50 All Purpose Fiddle Block with Becket and Cleat RF51530 is a versatile sailboat control-line block designed for cruising and racing applications. It provides a practical solution for mainsheets, halyards, vangs, spinnaker controls, and other purchase systems where dependable handling, high working loads, and easy adjustment are important.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIts self-lubricating Acetal polymer sheave runs on polished stainless steel races to help reduce friction while supporting durability under both dynamic and high static loads. The Captive Lock universal head can be fixed in either of two planes or allowed to swivel as needed, giving sailors flexibility when routing lines and configuring onboard hardware. The multi-position cleat arm adjusts quickly without tools and secures firmly in place for convenient line control.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe removable becket pin allows line splicing before installation, while the slotted pin shackle helps reduce the chance of fouled lines. Built with a Grade 316 stainless steel load strap and impact- and UV-resistant, fiber-reinforced Nylon cheeks, this Ronstan Series 50 block is suited to mainsheet and halyard applications on boats up to 33 feet, as well as vang, spinnaker control, fine-tune mainsheet tackle, Cunningham, backstay, and other control-line systems. For larger boats up to 40 feet, Ronstan identifies the Series 60 as the appropriate option.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-load performance:\u003c\/strong\u003e Designed for applications requiring exceptionally high working loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-friction sheave:\u003c\/strong\u003e Self-lubricating Acetal polymer sheave runs on polished stainless steel races.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaptive Lock universal head:\u003c\/strong\u003e Fixes in two planes or swivels as required for flexible installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable cleat arm:\u003c\/strong\u003e Multi-position arm adjusts without tools and locks securely in position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine-friendly hardware:\u003c\/strong\u003e Slotted pin shackle helps prevent fouled lines, and the removable becket pin supports pre-installation splicing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Ronstan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 50 All Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e RF51530\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Fiddle block with becket and cleat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad strap:\u003c\/strong\u003e Grade 316 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheeks:\u003c\/strong\u003e Impact- and UV-resistant, fiber-reinforced Nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement parts:\u003c\/strong\u003e RF51010 replacement becket pin and RF150 shackle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e Sailboat sheets, halyards, vangs, spinnaker controls, and control-line purchase systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003eChoose the Ronstan RF51530 Series 50 All Purpose Block for versatile, serviceable line control on cruising and racing sailboats.\u003c\/p\u003e\u003cbr\u003eSEO META DESCRIPTION:\u003cbr\u003eRonstan RF51530 Series 50 fiddle block with becket and cleat delivers versatile, low-friction line control for cruising and racing sailboats.\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHigh-load performance: Designed for applications requiring exceptionally high working loads.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLow-friction sheave: Self-lubricating Acetal polymer sheave runs on polished stainless steel races.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCaptive Lock universal head: Fixes in two planes or swivels as required for flexible installation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable cleat arm: Multi-position arm adjusts without tools and locks securely in position.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLine-friendly hardware: Slotted pin shackle helps prevent fouled lines, and the removable becket pin supports pre-installation splicing.\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":44881668800601,"sku":"70688","price":141.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/70688XL.jpg?v=1789193492","url":"https:\/\/www.marinepartsonly.com\/products\/ronstan-series-50-all-purpose-fiddle-block-with-becket-and-cleat-rf51530","provider":"Marine Parts Only","version":"1.0","type":"link"}