{"product_id":"lewmar-50mm-fiddle-block-w-cam-becket-black-1-4-3-8-line-239-29925039bk","title":"Lewmar 50mm Synchro Fiddle Block – Cam \u0026 Becket, Black, 1\/4”–3\/8” Line","description":"\u003ch2\u003eMaximum Control in a Single Block\u003c\/h2\u003e\u003cp\u003eThe Lewmar 50mm Synchro Fiddle Block with Cam and Becket packs the most functionality into the smallest footprint in the Synchro 50mm lineup. The fiddle configuration gives you two sheaves in a staggered arrangement for smooth multi-part line handling, the integrated cam cleat locks off the line instantly without a separate fitting, and the becket provides a fixed anchor point for building purchase systems — all in one compact, lightweight unit.\u003c\/p\u003e\u003cp\u003eThe high-density, free-spin plain bearing and self-aligning swivel head keep friction low under load, while stainless steel straps and glass-fibre reinforced cheeks deliver the durability performance sailors demand.\u003c\/p\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMainsheet systems requiring integrated cam lock-off and purchase anchor point\u003c\/li\u003e\n\u003cli\u003eVang and cunningham purchase systems on dinghies and small keelboats\u003c\/li\u003e\n\u003cli\u003eControl lines where space is limited and multi-function hardware is preferred\u003c\/li\u003e\n\u003cli\u003eRunning rigging on performance dinghies and day sailors\u003c\/li\u003e\n\u003cli\u003eLine sizes: 1\/4” to 3\/8” (6–8mm)\u003c\/li\u003e\n\u003cli\u003eBlock size: 50mm sheave diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConfiguration: Fiddle (double sheave, staggered) with cam cleat and becket\u003c\/li\u003e\n\u003cli\u003eSheave diameter: 50mm\u003c\/li\u003e\n\u003cli\u003eLine range: 1\/4”–3\/8” (6–8mm)\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003cli\u003eBearing: High-density free-spin plain bearing\u003c\/li\u003e\n\u003cli\u003eHead: Self-aligning swivel\u003c\/li\u003e\n\u003cli\u003eConstruction: Stainless steel straps, glass-fibre reinforced cheeks\u003c\/li\u003e\n\u003cli\u003eAttachment: Patented shackle post lock\u003c\/li\u003e\n\u003cli\u003eSKU: 239-29925039BK\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This is the all-in-one solution for dinghy and small keelboat sailors who want a complete mainsheet or vang system in a single block. The fiddle layout handles the multi-part purchase, the cam cleat locks off the line hands-free, and the becket anchors the system — eliminating the need for separate cleats or additional hardware. Ideal for boats in the 16–26 ft range running 1\/4”–3\/8” line where simplicity and weight savings matter most.\u003c\/p\u003e\u003ch3\u003eOther 50mm Synchro Blocks\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-single-black-1-4-3-8-line-239-29925001bk\"\u003e50mm Synchro Block – Single, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-synchro-block-double-black-1-4-3-8-line-239-29925002bk\"\u003e50mm Synchro Block – Double, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-synchro-block-triple-black-1-4-3-8-line-239-29925003\"\u003e50mm Synchro Block – Triple, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-double-block-becket-black-29925005bk\"\u003e50mm Synchro Block – Double with Becket, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-single-w-becket-cam-black-1-4-3-8-line-239-29925009\"\u003e50mm Synchro Block – Single with Becket \u0026amp; Cam, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-triple-w-becket-cam-black-1-4-3-8-line-239-29925010\"\u003e50mm Synchro Block – Triple with Becket \u0026amp; Cam, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-halyard-black-1-4-3-8-line-239-29925021\"\u003e50mm Synchro Halyard Block, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-fiddle-w-becket-black-1-4-3-8-line-239-29925034\"\u003e50mm Synchro Block – Fiddle with Becket, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-50mm-synchro-block-fiddle-w-cam-black-1-4-3-8-line-239-29925037\"\u003e50mm Synchro Block – Fiddle with Cam, Black\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOther Synchro Block Sizes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-60mm-synchro-block-single-black-5-16-3-8-line-239-29926001bk\"\u003e60mm Synchro Blocks – 5\/16”–3\/8” Line\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-72mm-synchro-block-single-black-3-8-1-2-line-239-29927201\"\u003e72mm Synchro Blocks – 3\/8”–1\/2” Line\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/lewmar-90mm-synchro-block-single-w-becket-black-1-2-9-16-line-239-29929004\"\u003e90mm Synchro Blocks – 1\/2”–9\/16” Line\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePair It With\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"\/products\/lewmar-synchro-snap-shackle-239-29925040\"\u003eLewmar Synchro Snap Shackle – 50mm\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250740166692,"sku":"239-29925039BK","price":148.09,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/11076868-8806-4ac4-b13d-e3a2c8d925a4.png?v=1787026239","url":"https:\/\/marisolmarine.com\/products\/lewmar-50mm-fiddle-block-w-cam-becket-black-1-4-3-8-line-239-29925039bk","provider":"Marisol Marine Company","version":"1.0","type":"link"}