{"product_id":"ronstan-fiddle-block-50mm-rf51500","title":"Ronstan Fiddle Block 50mm - RF51500","description":"\u003cp class=\"h2\"\u003e\u003cstrong\u003eRonstan Fiddle 50mm - RF51500\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for serious sailing, the Ronstan Fiddle 50mm delivers exceptional load capacity and dependable performance across sheets, halyards, and control lines. \u003c\/strong\u003eThe self-lubricating Acetal polymer sheave paired with polished stainless steel races handles both dynamic and static loads with minimal friction and zero fuss—ideal for cruising and racing up to 8m sportsboats.\u003cbr\u003e\u003cbr\u003eTough construction with UV-stabilised Acetal sheaves, reinforced Nylon cheeks, and Grade 316 stainless steel races ensures years of reliable service without maintenance. Whether rigging a mainsheet, halyard, vang, or spinnaker controls, this all-purpose block delivers the durability and strength you need when the wind picks up.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003eExceptionally high working loads (1500 kg breaking load, 750 kg safe working load)\u003cbr\u003eSelf-lubricating sheave eliminates corrosion and wear\u003cbr\u003eLow-maintenance, long-lasting design\u003cbr\u003eFits ropes up to 10mm diameter\u003cbr\u003eWeighs just 167g\u003cbr\u003e\u003cbr\u003eIdeal for off-the-beach catamarans, one-design classes, and sportsboats up to 26 feet.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":47747138748500,"sku":"RF51500","price":114.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0589\/2289\/3396\/files\/RF51500_medium_c46a0bfc-7f99-499b-8790-fac5cafc4f11.avif?v=1790811207","url":"https:\/\/marineandsport.co.nz\/products\/ronstan-fiddle-block-50mm-rf51500","provider":"Marine \u0026 Sport Wānaka","version":"1.0","type":"link"}