Stabilize the front wheel of a motorcycle for trailer transportationFit securely into recessed or floor-mounted Series E TracksWheel chocks are made of thick-wall steel tube construction and feature a chrome finishDesign lets you move your wheel chock, tie-downs and bike virtually anywhere along the Series E Track for the best position to accommodate multiple bikes, trikes or choppers, giving optimum space utilization16,5 cm (6,5") wheel chock has clearance for motorcycles with large rotors and is designed with a three-bend radius that will keep any width tire centered in the chockTie-down fitting (sold each) installs into Series E track in seconds; moves along the track for perfect tie-down angleIf it doesn't say "Pingel®." it isn't the real thingMade in the U.S.A.