SpecificationDesigned to lock at any angle up to 180°. Spring-loaded sleeve locks coupler in place for straight applications or slides back for angular application. Has 8” overall length and corrosion-resistant finish. For hand operated grease guns only. Recommended working pressure is 3,000 PSI.Carded. 10 per master.Plews/LubriMatic grease fittings are precision engineered to withstand the rugged use of most automotive, farm and industrial applications.