Application: Quick and easy removal of rust and dirt from contact surfaces of wheel hubs and brake discs with wheel bolt support. Prevents the falsification of the wheel bolt tightening torque caused by corrosion. Hook and loop fastener for quick changing of grinding wheels. Includes 5 spare grinding wheels (small) with a diameter of 40 mm. Open-pored abrasive material and cup-formed grinding disc minimize dust formation. No sparks are produced. Net weight: 0.04 kg. Number of tools: 5.