The thule 984 carbon frame protector is an adapter to enable safe transport of bikes with carbon frames thule 984 carbon frame protector features the fixation pressure is distributed over a large surface area to minimize risk of frame damages it fits all types of frame geometries and is easily adjustable with no loose parts the adapter has a soft tpe rubber liner to avoid scratching the bike frame only to be used with thule bike carriers with a torque limiter knob eg thule