Description: Material: ABS + metal Size: 2.5 x 1cm Specification: 4-piece set/8-piece set --(2.0-2.3bar) applicable to automobiles, motorcycles, bicycles, etc. Warning: remove the cover. Make sure you don't lose the black washer. They tend to fall off and are difficult to find. It is recommended to remove it before garage maintenance. Packing list: 4/8 x Monitor Valve Stem Caps