It’s light, designable, and easy removable for the core. The conical base fits in
all kinds of rims. All valve stems are made of Aluminum 6061-T6. You can choose to
add A-keys(valve core removal tool) to the kit. We have the length from 38, 45, 60,
70 to 100(mm) for every uses. If you need further details, please contact us!