Description:Replacement converter impeller for torque convertor group.Attributes:• Material: Cast Aluminum• Number of Blades: 31• Outside Diameter: 500 mm (19.685 in)• Inside Diameter: 251.08 mm (9.885 in)• Length: 130.5 mm (5.137 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.