Titan Ramps Adjustable Motorcycle Wheel Chock 17" - 21" Tires Bike Stand Trailer Truck Mount Compatibility: Fits wheels that measure 17-21 in diameter and less than 6.5 wide Safety: Mount to floor securely instead of bolting; Use kickstand or strap to bind it Includes: 1 motorcycle chock and mounting hardware Design: Solid, powder-coated, efficiently uses storage space; Easy for 1 person to mount and drive into Dimensions: Base  15.4 x 10.3; Weighs 18 lb