Description:Synchronizers are used in the transmission to adjust the speed of the shaft so that the gears align more quickly during shifting. The synchronizer uses the friction between cone and collar to synchronize the speed of rotating components.Attributes:• Material: Steel• Outside Diameter: 182 mm (7.165 in)• End 1 Internal Spline Number of Teeth: 38• End 2 Internal Spline Number of Teeth: 54Application:Cat synchronizer is designed for clutch group used on the Cat transmission. Consult your owner's manual or contact your local Cat Dealer for more information.