RF74251%3A%20SERIES%2075%20CORE%20BLOCK%26trade%3B%2C%20DOUBLE%20FOOTDouble%20foot%20block%2C%20requires%202%20x%2010mm%20(3%2F8%22)%20fasteners%0D%0AFEATURES%0D%0A%0D%0AClass%20leading%20performance%20and%20sleek%2C%20contemporary%20styling%0D%0AExcellent%20dynamic%20and%20high%20static%20load%20performance%0D%0ALess%20than%20half%20the%20friction%20of%20the%20nearest%20competitor**%20Total%20block%20load%0D%0AMaximum%20load%20on%20top%20sheave%20not%20to%20exceed%2050%25%20of%20total%20block%20load%0D%0A%0D%0ASPECIFICATIONS%0D%0A%0D%0AB.L.%20(kg)%203000**%0D%0AM.W.L.%20(kg)%201500**%0D%0AMax.%20Rope%20diameter%20(mm)%2012%0D%0AWeight%20(g)%20530%0D%0AFastener%20%26Oslash%3B%20(mm)%2010%0D%0AQty.%20Fasteners%202%0D%0ANotes%3A%20Maximum%20load%20on%20top%20sheave%20not%20to%20exceed%2050%25%20of%20total%20block%20load.%0D%0A%0D%0AAPPLICATIONS%0D%0A%0D%0AIdeal%20for%20use%20on%20mainsheet%2C%20spinnaker%20sheet%2C%20vang%2C%20halyard%20and%20backstay%20applications%20on%20boats%20up%20to%2014m%20(46ft).%0D%0AGeneral%20applications%20on%20larger%20yachts.%0D%0AAlloy%20sheave%20models%20are%20available%20for%20use%20with%20wire.%0D%0A%0D%0AMATERIALS%0D%0A%0D%0ASheave%3A%20U.V.%20stabilised%20acetal.%0D%0ACheek%20plates%3A%20Aluminium%20alloy.%0D%0ABall%20Bearings%3A%20High%20compression%20strength%20carbon%20black%20acetal.