A comprehensive range of plain and ball bearing sheaves is used throughout the complete Barton block range. Barton Ball Sheave 44 X 20 X 6 is moulded from acetal resin. Our unique, super-low-friction ball race system features Delrin balls running on a large diameter centre boss, which ensures an extremely low friction performance.SpecificationsWeight: 30 gDimensions: 44 44 20 mmColour: Grey, WhiteSheave Size: 44mm x 20mm (1 47/64 x 3/4)Bore Diameter: 6mm