SpecificationsMaterialSteelBore TypeReborableDiametral Pitch4Min Bore Size1.250 in.Pressure Angle20.000 deg.Max Bore Size3.125 in.Number of Teeth40Hub Outside DiameterNO HUBPitch Diameter10.000 in.Hub ProjectionNO HUBOutside Diameter10.500 in.Length thru Bore5.000 in.Storage Dimension Length10.500 in.Weight84.68 lbs.Storage Dimension Width10.500 in.Individually PackagedNoStorage Dimension Height5.000 in. STANDARD BORE: 1-1/4"