How it Works - The Single Superchock is Self-adjusting !
1.Put your thumbs in the thumb-holes of the re-cycled plastic chocks and grip the 2 chocks. 2. Pull the 2 chocks to expand the connecting bar. 3. Extend the connecting bar wide enough to allow the re-cycled plastic chocks to go on the outside of the wheel. 4. Release the chocks and the spring tension snugs the chock to the wheel.
The Superchock will adjust to the wheel !
Superchock, Inc. Joe Thompson 1301 Joliet Ave. Sioux Falls, SD 57110