{"title":"Block Accessories \u0026 Parts","description":"","products":[{"product_id":"ronstan-73mm-acetal-sheave-22mm-width","title":"Ronstan 73mm Acetal Sheave 22mm Width","description":"\u003cp\u003eThe Ronstan 73mm Acetal Sheave is moulded from a specially modified UV-resistant grade of Acetal, engineered for a long service life in demanding marine environments. Acetal's high strength, impact and wear resistance, and excellent low friction properties make it well suited to bearing applications. Fitted with a bronze bearing for smooth, reliable operation.\u003c\/p\u003e\u003cbr\u003e\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 73mm\u003cbr\u003e\u003cstrong\u003eMaximum Rope Diameter:\u003c\/strong\u003e 14mm\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 73mm\u003cbr\u003e\u003cstrong\u003eB:\u003c\/strong\u003e 21.2mm\u003cbr\u003e\u003cstrong\u003eC:\u003c\/strong\u003e 12.7mm\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e UV resistant Acetal with bronze bearing\u003cbr\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e Mainsheet, halyard, vang, spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)\u003cbr\u003e\u003cbr\u003eItem Code. RF431","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48560446832872,"sku":"9316800046522","price":25.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/9316800046522_1.jpg?v=1778839707"},{"product_id":"ronstan-38mm-acetal-sheave-15mm-width","title":"Ronstan 38mm Acetal Sheave 15mm Width","description":"\u003cp\u003eThe Ronstan 38mm Ball Bearing Acetal Sheave is precision moulded from UV-resistant Acetal and runs on Acetal or Torlon® ball bearings for high performance and minimum friction under moderate loads.\u003c\/p\u003e\u003cbr\u003e\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 38mm\u003cbr\u003e\u003cstrong\u003eBore:\u003c\/strong\u003e 8mm\u003cbr\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e 15mm\u003cbr\u003e\u003cstrong\u003eMaximum Rope Diameter:\u003c\/strong\u003e 10mm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 15g\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e UV resistant Acetal sheave, Acetal ball bearings\u003cbr\u003e\u003cbr\u003eItem Code. RF1766","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48560452042984,"sku":"9316800130177","price":25.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/9316800130177_1.jpg?v=1778839989"},{"product_id":"ronstan-45mm-nylatron-sheave-10mm-width","title":"Ronstan 45mm Nylatron Sheave 10mm Width","description":"\u003cp\u003eThe Ronstan RF132 is a 45mm Nylatron® sheave suitable for use with wire rope or rope. Nylatron® is a cast, partially cross-linked polyamide compound modified with a MoS₂ filler, delivering excellent wear resistance, self-lubrication, and low friction properties — making it an ideal choice for demanding rigging applications.\u003c\/p\u003e\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nylatron®\u003cbr\u003e\u003cstrong\u003eSheave Diameter (A):\u003c\/strong\u003e 45mm\u003cbr\u003e\u003cstrong\u003eWidth (B):\u003c\/strong\u003e 9.5mm\u003cbr\u003e\u003cstrong\u003eBore (C):\u003c\/strong\u003e 8mm\u003cbr\u003e\u003cstrong\u003eMaximum Rope Diameter:\u003c\/strong\u003e 8mm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 33g\u003cbr\u003e\u003cstrong\u003eSuits Block Series:\u003c\/strong\u003e RF103AW, RF104AW\u003cbr\u003e\u003cbr\u003eItem Code. RF132","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48564090077416,"sku":"9316800016648","price":20.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/9316800016648_1.jpg?v=1778922592"},{"product_id":"shelden-sheave-box-al-70-mk2","title":"Selden Sheave Box AL-70 MK2","description":"\u003cp\u003eThe Selden AL-70 MK2 Sheave Box is suitable for halyards and spinnaker pole lift applications. Supplied as a complete kit including M6 self-tapping screws, a ø5.3mm drill bit, ø6.4mm Monel pop-rivets, and assembly instructions.\u003c\/p\u003e\u003cbr\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e- Suitable for halyards and spinnaker pole lift\u003cbr\u003e- Max line size: ø12mm\u003cbr\u003e- Safe working load: 1,200kg\u003cbr\u003e- Kit includes M6 self-tapping screws with ø5.3mm drill bit\u003cbr\u003e- Kit includes ø6.4mm Monel pop-rivets\u003cbr\u003e- Assembly instructions included\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Selden","brand":"Boat Harbour Marine","offers":[{"title":"Default Title","offer_id":48625500487912,"sku":"20061944","price":189.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/20061944_1.jpg?v=1780721796"}],"url":"https:\/\/boatharbourmarine.com.au\/collections\/block-accessories-parts.oembed","provider":"Boat Harbour Marine","version":"1.0","type":"link"}