{"product_id":"lewmar-72mm-synchro-fiddle-block-becket-cam-black-29927239bk","title":"Lewmar 72mm Synchro Fiddle Block with Becket \u0026 Cam – Black | 29927239BK","description":"\u003ch2\u003eLewmar 72mm Synchro Fiddle Block with Becket \u0026amp; Cam – Black\u003c\/h2\u003e\u003cp\u003eThe Lewmar Synchro 72mm Fiddle Block with Becket and Cam Cleat is built for high-load sailing control systems where strong mechanical advantage and fast, secure line control are both essential. The fiddle configuration stacks two sheaves in a compact vertical arrangement, the integrated becket provides a line termination point for multi-part purchase systems, and the cam cleat lets you hold or release the working line instantly without reaching for a separate cleat.\u003c\/p\u003e\u003cp\u003eLewmar’s Synchro free-spin bearing technology minimizes friction under load, while the stainless steel strap and marine-grade composite construction are built to handle the demands of performance cruising and racing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 29927239BK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 72 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Fiddle (double sheave, vertical) with becket and cam cleat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Diameter:\u003c\/strong\u003e 3\/8\" – 1\/2\" (10 mm – 13 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Load Limit:\u003c\/strong\u003e 2,420 lbs (1,100 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black marine-grade composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 743683203855\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFiddle configuration — compact vertical twin-sheave layout for high purchase in tight spaces\u003c\/li\u003e\n\u003cli\u003eIntegrated becket for line termination in multi-part purchase systems\u003c\/li\u003e\n\u003cli\u003eCam cleat for fast, secure line hold and release from the trimming position\u003c\/li\u003e\n\u003cli\u003eSynchro free-spin bearing technology — smooth, low-friction operation under high static loads\u003c\/li\u003e\n\u003cli\u003eStainless steel strap for strength and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eAdjustable swivel configuration — set for fixed or rotating operation\u003c\/li\u003e\n\u003cli\u003eBlack marine-grade composite construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems requiring high purchase and built-in line control\u003c\/li\u003e\n\u003cli\u003eBoom vang and kicker systems\u003c\/li\u003e\n\u003cli\u003eFine-tune controls and cascade purchase arrangements\u003c\/li\u003e\n\u003cli\u003eHigh-load running-rigging systems on performance cruisers and racing sailboats\u003c\/li\u003e\n\u003cli\u003eApplications requiring compact mechanical advantage with 3\/8\"–1\/2\" line\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment Note\u003c\/h3\u003e\u003cp\u003eConfirm the 72 mm block size, 3\/8\"–1\/2\" line range, 1,100 kg working load, attachment configuration, becket arrangement, and cam-cleat orientation before replacing or upgrading existing running rigging. Actual loads vary considerably with vessel size, sail area, and purchase configuration.\u003c\/p\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-72mm-synchro-block-fiddle-black-3-8-1-2-line\"\u003eLewmar 72mm Synchro Fiddle Block – Black (no Becket or Cam)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-72mm-synchro-block-fiddle-w-becket-black-3-8-1-2-line\"\u003eLewmar 72mm Synchro Fiddle Block with Becket – Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-72mm-synchro-block-fiddle-w-cam-black-3-8-1-2-line\"\u003eLewmar 72mm Synchro Fiddle Block with Cam – Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-60mm-synchro-block-fiddle-w-becket-black-5-16-3-8-line\"\u003eLewmar 60mm Synchro Fiddle Block with Becket – Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-60mm-synchro-block-fiddle-w-cam-black-5-16-3-8-line\"\u003eLewmar 60mm Synchro Fiddle Block with Cam – Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-72mm-synchro-block-triple-black-3-8-1-2-line\"\u003eLewmar 72mm Synchro Triple Block – Black\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This is the go-to block for mainsheet and boom vang systems on mid-size to larger sailboats where you need high purchase, a built-in line termination point, and the ability to cleat off quickly — all in a single compact unit. The fiddle layout keeps the block short and manageable even in tight traveler or boom-end installations.\u003c\/p\u003e\u003cp\u003eWhen replacing or upgrading, don’t just match the outside size. Confirm the line diameter (3\/8\"–1\/2\"), working load (1,100 kg), becket arrangement, and cam-cleat orientation against your existing system. Getting the cam position wrong relative to your trimming angle is a common fitment issue that’s easy to overlook on paper. If your loads or line sizes are smaller, the \u003ca href=\"\/products\/lewmar-60mm-synchro-block-fiddle-w-becket-black-5-16-3-8-line\"\u003e60mm Fiddle with Becket\u003c\/a\u003e may be the better fit.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250739052580,"sku":"239-29927239","price":296.04,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/8fce3ac7-b103-478e-ab12-f3099f85fb7c.png?v=1786603153","url":"https:\/\/marisolmarine.com\/products\/lewmar-72mm-synchro-fiddle-block-becket-cam-black-29927239bk","provider":"Marisol Marine Company","version":"1.0","type":"link"}