{"product_id":"lewmar-30mm-control-block-single-swivel-head","title":"Lewmar 30mm Control Block Single Swivel Head","description":"\u003cp\u003e\u003cstrong\u003eLewmar 30mm Control Block Single Swivel Head\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Lewmar Control Block Single Swivel Head delivers smooth, efficient handling of control lines with automatic alignment to changing lead angles. The self-orienting swivel head reduces friction and sideloading, ensuring consistent rope flow and precise trimming. Constructed from durable, marine-grade materials, the block offers reliable, low-friction performance in demanding onboard environments. Ideal for control lines, travellers, and fine-tune systems on cruising and racing yachts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecise Line Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Lewmar Control Block Single Swivel Head is designed to deliver smooth, accurate handling of control lines where responsiveness and reliability are essential. Ideal for fine-tuning sail trim and managing lightly to moderately loaded lines, it supports confident, precise adjustments across a wide range of sailing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Head Adaptability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEquipped with a freely rotating swivel head, the block automatically aligns with changing lead angles to reduce sideloading and friction. This self-orienting capability promotes efficient rope flow and consistent control, particularly in dynamic systems where line direction frequently shifts during trimming and manoeuvres.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Marine-Grade Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufactured from tough, marine-grade materials, the Control Block Single Swivel Head is built to withstand the demands of the onboard environment. Precision-engineered sheave profiles and robust side plates provide dependable strength, resistance to wear, and long-term performance under repeated use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmooth, Reliable Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned to minimise friction and deliver predictable response, the block ensures clean, controlled line movement during rimming and easing. Its compact, stable geometry supports accurate load transfer and responsive sail handling, helping reduce effort and maintain control during extended sailing.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 2x-large;\"\u003eTechnical Description\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eHardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eHardware Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eBlocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eBoat Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eSail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eBlock Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eSwivel Head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eBlock Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eSheave Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%;\"\u003e\u003cstrong\u003eBoat Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 50%;\"\u003eUp to 30ft, 31-50ft, 51-70ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n","brand":"Lewmar","offers":[{"title":"Default Title","offer_id":53592411406708,"sku":"LEW29901321BK","price":21.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/LEW29901321BK__02634.jpg.1428984928.jpg?v=1761717998","url":"https:\/\/velasailingsupply.com\/products\/lewmar-30mm-control-block-single-swivel-head","provider":"Vela Sailing Supply","version":"1.0","type":"link"}