{"product_id":"harken-40mm-carbo-air-double-swivel-block-with-becket-part-2639","title":"Harken 40mm Carbo Air Double Swivel Block with Becket, Part 2639","description":"\u003cp\u003e\u003cstrong\u003e40mm Carbo Air Double Swivel Block with Becket\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLow-friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSheave  (mm)40 mm\u003c\/li\u003e\n\u003cli\u003eSheave  (in)1 9\/16 in\u003c\/li\u003e\n\u003cli\u003eMaximum line  (mm)10 mm\u003c\/li\u003e\n\u003cli\u003eMaximum line  (in)3\/8 in\u003c\/li\u003e\n\u003cli\u003eMaximum working load (kg)440 kg\u003c\/li\u003e\n\u003cli\u003eMaximum working load (lb)970 lb\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Harken 40mm Carbo Air Double Swivel Block with Becket is a compact, lightweight sailing block designed for reliable line handling and easy trimming. Part 2639 features low-friction performance and a high working load, making it a practical choice for sailors who need dependable control in a small, affordable block.\u003c\/p\u003e\u003cp\u003eDesigned as part of Harken’s Carbo Air block range, this double swivel block supports lines up to 3\/8 inch and accommodates a maximum working load of 970 pounds. The swivel design helps the block align with changing line direction, while the becket provides a convenient attachment point for compatible rigging applications. Its compact profile makes it well suited for a variety of sailboat control systems where efficient trimming and manageable equipment size are important.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Double swivel block design helps support smooth, adaptable line handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Low-friction construction promotes easier trimming during sailing operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e High 970-pound maximum working load supports demanding rigging applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Becket provides an additional attachment point for compatible line arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Compact 40mm sheave size offers practical performance for small-boat and sailboat control systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Harken\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 2639\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e 40mm Carbo Air double swivel block with becket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 1 9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Line Size:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Load:\u003c\/strong\u003e 970 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eChoose the Harken Carbo Air Double Swivel Block with Becket for compact, reliable sailboat rigging performance and easier line trimming.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSEO Meta Description:\u003c\/strong\u003e Shop the Harken 40mm Carbo Air double swivel block with becket, featuring low-friction trimming and a 970-pound maximum working load.\u003c\/p\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":"Harken","offers":[{"title":"Default Title","offer_id":44937129230425,"sku":"79735","price":103.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/79735XL.jpg?v=1789839491","url":"https:\/\/www.marinepartsonly.com\/products\/harken-40mm-carbo-air-double-swivel-block-with-becket-part-2639","provider":"Marine Parts Only","version":"1.0","type":"link"}