adapter caps can cover your valves to prevent damage to and protects the core from exposure to dirt and . This repair tool can convert valves and will be convenient for you to inflate. It can be your good helper when you repairing your bike. Features -Color: As shown. -Material: Aluminum, copper. -Size: About 5.50X1.00X1.00cm/2.16X0.39X0.39inch. -These are made of aluminum and copper materials, which enhances the corrosion resistance of the core and stem. -The adapter caps can cover your valves to prevent damage to and protects the core from exposure to dirt and . -With fine workmanship and unique appearance design, suitable for most with bike valves. -Our bike adapter kit makes your bicycles tires can be inflated using standard pump. -This repair tool can convert valves and will be convenient for you to inflate. Package list: 1 x wrench 5 x American style valves cores 5 x French style valves cores 5 x adapters 5 x American style valves caps 5 x French style valves caps