Condor - #PS1500 and Universal Etrack Adapter Combo - Aluminum Motorcycle Wheel Chocks MFG in the USA - this chock has an aluminum frame with steel hardware and components. Adapter bracket is steel and zinc coated for durability. Boomerang Stabilizer bar included. Can be adjusted side-to-side between 26in and 46in wide. Chock dimensions in the upright position: 29in wide x 30in long x 15in high. Folds down to 6in in height. Capable of accommodating front or rear wheel between 14in - 22in diameter / 80 - 220mm wide. Weighs 58 lbs. and ships in two packages.