{"product_id":"ronstan-series-75-ratchet-block","title":"Ronstan Series 75 Ratchet Block","description":"\u003cp\u003e\u003cstrong\u003eRonstan Series 75 Ratchet Block\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe patented extruded hole design, in conjunction with the groove profile of the sheave, provides a more powerful grip than conventional designs - up to 20:1 holding power.\u003c\/p\u003e\n\u003cp\u003eUnrivalled low weight is achieved by the use of a Torlon ratchet pawl, high grade machined alloy sheave and black Acetal hubs and bearings. On-Off switching knob is fitted to both sides of the swivel blocks (one can be removed if desired). Ratchet blocks can be disassembled for sheave replacement with RF72000.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUnrivalled 20:1 holding power.\u003c\/li\u003e\n\u003cli\u003eDual sided On\/Off switch.\u003c\/li\u003e\n\u003cli\u003eAbility to operate On\/Off switch under load.\u003c\/li\u003e\n\u003cli\u003eLow friction ball bearing system.\u003c\/li\u003e\n\u003cli\u003eLightweight.\u003c\/li\u003e\n\u003cli\u003eCheek cut-outs for easy bearing maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax. Rope diameter (in): 1\/2\u003c\/li\u003e\n\u003cli\u003eSheave diameter (in): 3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDinghy mainsheet systems - when maximum holding power is required.\u003c\/li\u003e\n\u003cli\u003eRF72100 mainsheet systems on sportsboats using RF7 mainsheet swivel cleat unit.\u003c\/li\u003e\n\u003cli\u003eControl line applications on larger yachts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSheave \u0026amp; cheek plates: Anodised aluminium.\u003c\/li\u003e\n\u003cli\u003eBall bearings: High compression strength acetal.\u003c\/li\u003e\n\u003cli\u003eRatchet pawl: High strength Torlon.\u003c\/li\u003e\n\u003cli\u003eSwivel shackle head fitting: Grade 316 stainless steel.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ronstan Sailboat Hardware","offers":[{"title":"Default Title","offer_id":53608497676660,"sku":"RONRF72100","price":252.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/4004\/9524\/files\/RF72100.jpg?v=1779771335","url":"https:\/\/velasailingsupply.com\/products\/ronstan-series-75-ratchet-block","provider":"Vela Sailing Supply","version":"1.0","type":"link"}