Supports your bike in an upright position, and snaps on your trailer or truck bed when using adapter kit 910-332 Works on the front and rear tires This fully adjustable wheel locking system accommodates front and rear wheel sizes from 14"-22" diameter and 80mm-230mm wide The patented locking mechanism effortlessly and securely supports your motorcycle in an upright position on the ground or on a trailer Upright dimensions: 30" L x 29" W x 15" H; folded dimensions: 30" L x 29" W x 6" H