Mounted on a trailer, it easily snaps on and off when used with included trailer adapter kit; in a pickup truck, it may be used free standing Patented locking mechanism effortlessly and securely supports motorcycle in an upright position Can be used on pavement, concrete, dirt, sand, gravel and also trailers and pickup trucks Upright dimensions: 25" L x 9" W x 15" H; folded dimensions: 25" L x 9" W x 6" H Make tying down a motorcycle simple and easy for one person Self locking and folds to become compact Work on all low fender applications Designed for the 120 wide tire Made in the U.S.A.. STAND CHOPPER CHOCK 120