Description:Drive disc (part # 565-1515) used with the speed sensor in the differential for the traction control system.Attributes:• Material: Hardened Steel• Internal Spline Number of Teeth: 52• Three external flanges provide exact OEM fit• Inside Diameter: 80.93 mm (3.186 in)• Outside Diameter: 97 mm (3.819 in)• Width: 16.75 mm (0.659 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.