Keyser Manufacturing Tire Prep Motor assemblies are designed to work hand in hand with Keyser Tire Prep Carts. Manufactured for multiple wheel styles, Keyser supplies tire prep motors in a standard 1-way variable speed or high torque 2-way variable speed design. Pair with any of the multiple Keyser Manufacturing tire prep attachments, and you'll have your tires grooved, siped and prepped exactly how you want them in a matter of minutes.