Dodge Sheave, Type C1, Taper-Lock Bore Type, 7/16 to 1-11/16 in Bore Dia, 4-1/2 in Outside Dia, 4.45 in, 2 Grooves, 1.09 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