Feature: Dustproof, Easy Installation, Leak Test, No Tools Required, Rust Resistant Coating For Wheel Car Truck SUV Bike Specification: Size: Outer Diameter 10MM x Total Length 12.4MM Material: Plastic Color: Black Package Contents: 1000 x Valve Cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.