Prevent tandem-tire shift using just one piece of equipment: Eaz-Lift’s Premium Metal Wheel Stop. Zinc-plated for corrosion resistance, it has raised ribs on the contact surface for increased traction which helps prevent tire shift/slippage between tandem tires spaced from 3″-10″ apart. It also includes a comfort-grip ratchet wrench for easy installation and a lock to keep it secure.