A comprehensive range of plain and ball bearing sheaves is used throughout the complete Barton block range. Barton Plain Sheave 35 X 18 X 13 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.SpecifcationsWeight: 14 gDimensions: 35 35 18 mmColour: Grey, WhiteSheave Size: 35mm x 18mm (1 3/8 x 45/64)Bore Diameter: 13mm