{"product_id":"ronstan-series-40-ball-bearing-block-single-upright-lead-rf40171","title":"Ronstan Series 40 Ball Bearing Block - Single Upright Lead [RF40171]","description":" \u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSeries 40 Ball Bearing Block - Single Upright Lead\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance \u0026amp; low friction. The 2-stage ball bearing system provides consistent performance over the full load range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eTypically used for halyards at the mast base.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaterials:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAcetal ball bearings\u003c\/li\u003e\n\u003cli\u003eUV stabilized Acetal sheave\u003c\/li\u003e\n\u003cli\u003eGrade 316 stainless steel load housing\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2lrm5Zm ---\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":48582501925057,"sku":"SE-70615","price":56.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/2903\/8529\/files\/70615XL.jpg?v=1724205923","url":"https:\/\/seaveyengineering.com\/products\/ronstan-series-40-ball-bearing-block-single-upright-lead-rf40171","provider":"Seavey Engineering Store","version":"1.0","type":"link"}