With the Black Widow Adjustable Width Motorcycle Wheel Chock, securing your motorcycle in a trailer or truck bed is a simple, one-person job. Made from high-strength, lightweight aluminum with heavy-duty epoxy rubber end caps, this patent-pending wheel chock guides the front tire into place and holds it firmly during transport. The adjustable arms have a range of 43 to 108 inches to securely fit any trailers and bed width without drilling or bolting. The front stop adjusts from 14.5 to 18.5 inches, and the rear tire cradle adjusts from 28.75 to 32 inches to accommodate tires from 15 to 22 inches in diameter. The center post and tire cradle remove easily for low profile storage.