For just $49.97 The revolutionary, Anti-Skid Tire Block (Set of 2) is an innovative and inexpensive device that can quickly and easily be strapped to the drive wheels of an immobilized vehicle. It then enables that vehicle, (whether it's stuck in sand, mud or snow) to get unstuck, quickly and under its own power! It's A Simple And Effective Solution to being stranded and disabled, in all types of terrain and adverse conditions. Never Get Stuck Again: The Anti-Skid Tire Block is most effective when used as directed, at the first signs of tire slippage (or being stuck). The Innovative Design enhances the ability of a slipping tire to extract itself from a "poor traction" situation. It's Easy To Install, safe to use and affordable