1.OFF-SET HEAD - Unlike other straight heads, valve stem remover and Installer is designed with a off-set and pivoting head, more convenient and easier to use. There is the thread inside the swivel head for screwing into cap that makes you install and remove valve stems without removing the valve core. The pivoting head is for optimal angle. 2.PROTECTIVE DESIGN - On the handle part knurled finish steel is designed for increasing friction and ensure while using. The rubber bumper is for protecting wheel and rim from damage. 12.6-inches long to provide more leverage necessary to remove stubborn valve stems with less effort. This remover and installer definitely a good helper for changing the valve stem. 3.TR413 VALVE STEM - Snap-in rubber car tire valve stems for tubeless 0.453" (11.5mm) diameter rim holes. Outside EPDM rubber is for ozone resistance. Apply for 65 PSI max cold inflation pressure and max rim thickness of 0.156". fits cars, light trucks, small trailers, wheelbarrows, lawn mowers, ATVs, and motorcycles. 4.Slotted-Head Valve Cap - 2 Pieces of valve remover caps are equipped in this kit. 2 in 1 valve caps are made of premium material, strong and durable to use. The top slot head can be used to remove valve cores and the bottom can be used as tire caps to prevent air leaking and dust. The little caps are made of highest quality nickel-plated brass and with a seal washer inside.