Features: 
SecureHook holds the bike by grabbing the front wheel – no frame contact is made.
Fits most 20″ to 29″ wheel diameter bicycles with tires up to 66mm wide.
Ratcheting wheel strap quickly secures back wheel to tray.
One-Key lock cylinder (included) locks the bike to carrier and carrier to rack.
Versatile design accommodates bikes with disc brakes, thru-axles and other non-traditional frame designs.
Corrosion resistant double-wall aluminum tray provides maximum strength and rigidity.
22.5 kg rating when on Thule bars.  17kg on all other brand of bars.