Milton S-444 Valve Core Tool For removal & insertion of valve cores One end for standard bore, one end for large bore valves Overall length 5" One end for standard bore and other end for large bore Handle length 3" Skincard For removal & insertion of valve cores. One end for standard bore, one end for large bore valves. Overall length 5" One end for standard bore and other end for large bore Handle length 3" Skin card