Light,easy and convenient to install.
To tire valve mouth design,filar silk closely,gently turn only.
Rocket shape makes the bike look more attractive and special.
Prevent leakage,dirt and rain water to extend the service life of bike tires.
Direct replacement,easy to install,only use the wrench to put the caps onto the tire valve stem.
Suitable for varied types of bikes,including mountain bike,roadbike,folding bike,especially for