Trimax trailer wheel lock boot with lug nut cover prevents tire removal and theft. 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. Rugged weather proof epoxy powder coat finish. Heavy gauge steel disc covers lug nuts to prevent wheel removal. Comes with 3 keys. The bright yellow color immediately tells would be thieves to look somewhere else! Protect your Trailer, ATV, Truck, Car, or anything else from theft. This is the ultimate lock for protecting your stuff!