The Trimax Ultra-Max Wheel Lock with Disc not only prevents theft of your trailer but also your wheel. The disc covers lugs nuts that prevents tire removal and easily adjusts to fit many different size tires and wheels. The TWL100 has an adjusting arm so you can tighten the disc closer to the lug nuts on deeper wheels. Made of heavy-gauge steel. Comes with two keys and a lifetime warranty. Weighs approximately 17 pounds.