Description:Ring gear hub for use in the rear drive axle.Attributes:• Material: Cast Iron• Spur Gear Number of Teeth: 72• Outside Diameter: 312 mm (12.283 in)• Inside Diameter: 65.5 mm (2.579 in)• Height: 28.8 mm (1.1338 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.