The tool is same size as the centerlock. It makes it much easier to get the wheel in to the rotor hub without damage the wheels, calipers and even the ceramic rotors. The only way to avoid the expensive outcomes is using our #Proto tool. Just screw the tool in to the factory threaded hub and slide the wheel to right place. Then replace the tool with the wheel nut. The #Proto tool is from special material, also protecting your wheel when sliding.