Description:Cat shaft assemblies are a key component in the planetary assemblies that power tough Cat transmissions to convert engine power into the exact combination of speed and force required by individual machines.Attributes:• Hardened steel shaft with sleeve bearing, dowel, orifice setscrew and plug• External Spline Number of Teeth: 55 (3X)Application:Consult your owner's manual or contact your local Cat Dealer for more information.