Spur Gear Bore Diameter 3/4 in Hub Diameter 2.02 in Hub Projection 0.88 in Face Width 1 in Pitch Diameter 3 in Material Steel Pressure Angle 14.5 Degrees Compatible Gear Rack Grainger Part Number 1L903 1L904 Compatible Gear Rack Manufacturer Part Number L516-6 L517-6 Diametral Pitch 10 Keyway No