Dodge Sheave, Type D1, Taper-Lock Bore Type, 7/16 to 1-11/16 in Bore Dia, 3.67 in Outside Dia, 3.6 in, 3 Grooves, 1.531 in Face Width, SH Bushing, For Use With: 3V Cross Section Belts, Cast Iron, Gray Isolates shock loads and vibrationMinor misalignment capabilityDrive ratios of 6:1 or more possibleLow maintenanceNo lubrication requiredTypically 95% efficiency can be obtained