It's a simple molded plastic stand for front wheel when in a static stand for bike workouts
This bike riser block keeps your bicycle's front tire in place and raises the front just enough that you will not be sliding off your seat while pedaling.
3.Internal design guarantees maximum wheel stability
Anti-slip feet stay in place and eliminate handlebar vibrations
Suitable for 95% size of road and moutain bikes/bicycles except Beach Cruiser.
