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 utilization6.5" (16.5cm) 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 anglePatented mounting bracketIf it doesn't say "Pingel®," it isn't the real thingMade in the U.S.A.