{"product_id":"ronstan-rf51140-series-50-single-stand-up-block","title":"Ronstan RF51140 Series 50 Single Stand Up Block","description":"\u003ch1\u003eRonstan RF51140 Series 50 Single Stand Up Block\u003c\/h1\u003e\u003cp\u003eThe Ronstan RF51140 Series 50 Single Stand Up Block is a versatile and durable solution for a wide range of sailing applications. With exceptionally high working loads and low maintenance, this block is designed for long service life and reliable performance. The self-lubricating Acetal polymer sheave ensures low friction and extreme durability, while the Captive Lock universal head and slotted pin shackle provide added convenience and ease of use. Whether for cruising or racing, this block is the right choice for sheets, halyards, and control line applications.\u003c\/p\u003e\u003ch2\u003eFeatures:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExceptionally high working loads\u003c\/li\u003e\n\u003cli\u003eLow maintenance, long service life\u003c\/li\u003e\n\u003cli\u003eSelf-lubricating Acetal polymer sheave ensures low friction and extreme durability\u003c\/li\u003e\n\u003cli\u003eCaptive Lock universal head\u003c\/li\u003e\n\u003cli\u003eSlotted pin shackle eliminates fouled lines\u003c\/li\u003e\n\u003cli\u003eMount with 2 x 5mm (3\/6\") fasteners (not supplied)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)\u003c\/li\u003e\n\u003cli\u003eS60 - on boats up to 12m (40ft)\u003c\/li\u003e\n\u003cli\u003eTypically used in direct 4:1 purchase systems such as mainsheets and boom vangs\u003c\/li\u003e\n\u003cli\u003eOn larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eMaterials:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGrade 316 stainless steel load strap\u003c\/li\u003e\n\u003cli\u003eImpact and UV resistant, fiber reinforced Nylon cheeks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eLearn More\u003c\/h2\u003e\u003cp\u003eFor more information about Ronstan RF51140 Series 50 Single Stand Up Block, visit \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Sailboat_block\" onclick=\"window.open(this.href,\" return false\u003eWikipedia\u003c\/a\u003e.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48077606125889,"sku":"9316800334599","price":51.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/3372\/1153\/files\/CWR-70680_9316800334599_image1.jpg?v=1758757634","url":"https:\/\/www.atlantisshowroom.com\/products\/ronstan-rf51140-series-50-single-stand-up-block","provider":"Atlantis Showroom","version":"1.0","type":"link"}