Dodge Sheave, Type B1, Taper-Lock Bore Type, 7/16 to 2 in Bore Dia, 5.6 in Outside Dia, 5.55 in, 3 Grooves, 1-1/2 in Face Width, SDS 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