Description:Couplings provide a physical connection that blocks harmful torsion and reduces shock and noise.Attributes:• Material: Hardened steel• End 1 Internal Spline Number of Teeth: 13• End 2 Internal Spline Number of Teeth: 14• Outside Diameter: 63 mm (2.480 in)• Height: 163 mm (6.417 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.