Tire stem measurement: the tire stem diameter is approx. 1 cm, and they are 1.6 cm high, suitable for most tiresHard material: this set of valve caps are made of aluminium alloy of good quality, hard and durable, thus can last for a long timeGeneral color: these wheel valve covers are -grey, general and simple, fits vehicles of various colorsCompletely sealed: the dustproof tire caps are sealed completely, can prevent water, dust or sand coming into the tire, thus prolong the tire service lifeWide application: this set of tire valve caps can be applied widely, you can use them on cars, bikes and motorcyclesSize (L x W x H): 1.6 x 1cmMaterial: Aluminum AlloyColor:Titanium GrayPackage includes: 40 x Tire stem valve capsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.