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Your cart is empty.Narrow high-load sheaves in mastheads improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. Sheaves combine sideload-carrying balls with a PTFE composite bushing for radial loads. Sheave Ø (mm)76 mmSheave Ø (in)3 inWidth (mm)16 mmWidth (in) 5/8 inWeight (g)128 gWeight (oz)4.5 ozCenter pin Ø (mm)12.7 mmCenter pin Ø (in) 1/2 inMaximum line Ø (mm)10 mmMaximum line Ø (in) 3/8 inMaximum wire Ø (mm)5 mmMaximum wire Ø (in) 3/16 inMaximum working load (kg)1814 kgMaximum working load (lb)4000 lbBreaking load (kg)7484 kgBreaking load (lb)16500 lbFootnote: Breaking load based on use of solid 304 stainless shafts.MFG# 691 UPC# 97653011958 MFG# 691 UPC# 097653011958
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