Description:Cat® Grease Zerk Fittings are held to the highest standards of quality, reliability and durability. These grease fittings are manufactured to exacting tolerances to ensure secure connections with grease guns and reliable performance of the internal ball check valve. This will prevent contaminants from entering the machine’s lubrication system. Each Cat Grease Zerk Fitting is designed to meet or exceed industry standards for operating pressure and corrosion protection to ensure a long life and proper machine functionality.Attributes:• Compatible with industry standard grease gun filling tips• Designed to meet or exceed the performance of industry standard parts• The image provided is for reference only. Grease Zerk fitting construction may differ slightly from the image depicted, but the part is designed to be interchangeable with the OEM part.Applications:Grease Zerk fittings are designed to be the fill point for grease lubrication systems when performing regular machine maintenance. Consult your owner’s manual or contact your local Cat Dealer for more information.