Description:Spline adapters like part # 1C-7826 are used in drive systems to connect a spline of one size to a spline of a different size and/or to connect an internal spline to an external spline.Cat drive train components must endure incredible torque, high impact loads, and frequent direction and gear changes. Cat designs and manufactures its transmissions and final drive components with these demands in mind. The result is a drive train that lasts longer and works harder over the life of the machine.Attributes:• Hardened steel• Internal Spline Number of Teeth: 13• External Spline Number of Teeth: 13• Length: 70 mm (2.75 in)Application:Consult your owner's manual or contact your local Cat Dealer for more information.