{"product_id":"ronstan-series-55-orbit-block-single-with-becket-swivel-head","title":"Ronstan Series 55 Orbit Block Single with Becket Swivel Head","description":"The Series 55 Orbit Block delivers exceptional performance for mainsheet and spinnaker systems on dinghies, sports boats, and small keelboats up to 9 metres. Featuring a low-friction 2-stage orbital ball bearing system, this block offers the highest working load in its class while maintaining an ultra-lightweight profile. The integrated becket and swivelling shackle head provide versatile rigging options for halyard, vang, and backstay applications. Engineered with high-strength acetal ball bearings and a fibre-reinforced load frame, it ensures reliability under heavy stress. This compact block is meticulously designed to minimise mass and maximise efficiency for competitive sailing. Its robust construction provides consistent, smooth operation in demanding marine environments.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eType of Block:\u003c\/strong\u003e Single\u003cbr\u003e\u003cstrong\u003eSheave Diameter:\u003c\/strong\u003e 55mm\u003cbr\u003e\u003cstrong\u003eBreaking Load:\u003c\/strong\u003e 1000kg\u003cbr\u003e\u003cstrong\u003eMaximum Working Load:\u003c\/strong\u003e 500kg\u003cbr\u003e\u003cstrong\u003eMax Rope Diameter:\u003c\/strong\u003e 10mm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 88g\u003cbr\u003e\u003cstrong\u003ePin Diameter:\u003c\/strong\u003e 5mm\u003cbr\u003e\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Glass fibre reinforced Nylon\u003cbr\u003e\u003cbr\u003eItem No. RF55110\u003cbr\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48278043787496,"sku":"9316800440405","price":67.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9065\/8280\/files\/9316800440405_1.jpg?v=1776722509","url":"https:\/\/boatharbourmarine.com.au\/products\/ronstan-series-55-orbit-block-single-with-becket-swivel-head","provider":"Boat Harbour Marine","version":"1.0","type":"link"}