Function 2: mouth hole screw rotation in the United States, particularly in the automobile, motorcycle above! When installing

tire, inner tube will not fall!! Easily pull it out!

Function 3: valve wrench, you can disassemble the valve core, a tire when used!

Features 4: you can use a threaded tip, above the iron thorn stuck in the tire, out! Very convenient, thread, can be selected like screws inside, above the tire iron thorn from the top!