Dodge Sheave, Type A1, Taper-Lock Bore Type, 7/16 to 2-5/8 in Bore Dia, 5.6 in Outside Dia, 5.55 in, 5 Grooves, 2.31 in Face Width, SK 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