TPMS sensor TPMS-01 valve stem: Material: Special aluminium for china space. Feature: Harder, lighter, more fasionthan other normal ones. Remarks: It is not only being sensor valve, but also being replacement valve. It is used for car wheel rim hole 11.3mm. When changing wheels or wheel sizes, the correct valve type must be confirmed with the rim technical specifications or the rim manufacturer. Being replacement valve, install step as follows: