Keeps the kickstand on your bike from sinking into a soft surface and your bike upright. Works on gravel, dirt, mud, sand, etc. In version 1, the hole goes half way through the ball; version 2 it goes to the bottom of the ball. Use V1 if you need a little extra height on your kickstand. Designed for a 3/8" diameter kickstand; scale to fit as required to fit yours.