1. Invisible valves is simple and fashion in appearance without extender.
2. The design without extender can improve the balance of whole tire.
3. Our whole new designed extender Exb-3 can easily remove the cap and inflate.
1. Rim hole: 11.5mm (0.453").
2. Valve core: TR-C1.
3. Stem material: brass, Ni plating.
4. Grommet material: rubber, EPDM.