This unit can be used as a stand alone stand or as a chock for transporting. Simply push or drive bike into cradle the pivoting bracket will close on the motorcycle tire securing the bike in the upright position allowing for a single person to secure a bike with tie-downs To remove, pull back on bike and chock will automatically releases the wheel Removable hardware is included to go from stand to wheel chock in your transport vehicle with little effort Multiple adjustment points for tire width (Up to 6" or 150mm tire) and tire diameter (17"-21"). Made from heavy gauge steel and black plasti-coated for looks and durability.