Needle Nose Adapter, Perfect For Use On Trucks, Vans & RV’s, For Converting Jaw Type Lube Couplers To Seal Needle Points, Dispenses Fine Line Of Grease Through The Needle Nose, Includes Both Small & Large Sleeves To Fit All Standard Couplers, Overall Length 5-1/4 inch, Tip Diameter .046 inch, Body Diameter .250 inch, For Hand Operated Grease Guns Only.