4" grease gun needle nose adapter perfect for use on trucks vans and RV's for converting jaw type lube couplers to seal needle points. Dispenses a fine line of grease to confined areas through the needle nose. Includes both small and large sleeves to fit all standard couplers. Overall length is 7 1/2" with tip. 4500 psi maximum working pressure. For use with hand-operated grease guns only.