SpecificationFor hand operated grease guns only. Recommended working pressure is 6,000 PSI. All steel construction. Fits all 1/8” NPT threads. Four jaws. Length 1-1/2”, width 3/4”.Carded. 10 per masterPlews/LubriMatic grease fittings are precision engineered to withstand the rugged use of most automotive, farm and industrial applications.