The Extreme Max Motorcycle Wheel Chock is sleek, stable, and solid. Drive your bike onto the chock and the rear wheel cradle locks the front wheel securely in place. One person can safely and easily secure the motorcycle without tipping. Made of durable steel and finished with a textured matte black powder coat, this wheel chock will look great in shop or trailer. The chock is designed to take up minimal room on the mounting surface while providing maximum stability for your bike. By combining a solid front cross bar with a solid boot, this chock uses floor space more efficiently than any other design. This space-saving design is great for storing or hauling multiple bikes or for mounting on a lift. Multiple rear wheel cradle adjustments allow you to fit wheels perfectly for stability during storage, transport, or maintenance. Fits 17 inch - 21 inch wheels between 3-5/32 inch - 7-3/32 inch wide. Note: Motorcycles with front wheel fender skirts and/or front wheel fender extensions should not use the wheel chock with the pivoting cradle set in the fourth hole (longest position). Use caution during the initial setup to ensure proper clearance on all bodywork.