Heavy Duty 3-Jaw Grease Coupler | With Ball Check | 10,000 PSI | Use with Hand & Air Operated Grease Guns | 1/8” NPT ThreadsStyle: 10000 PSI | Size: 3-JawAbout this item Recommended for use with air grease guns Hardened coupler body with double wall thickness withstands high pressure without deformation Fully hardened spring steel jaws Hexagonal nut for easy tightening Dimensions: 1.94 x 3.88 x 1 inches