Application: Quick and easy removal of rust and dirt from contact surfaces of wheel hubs and brake discs with wheel bolt support. Prevents falsification of the wheel tightening torques caused by corrosion. Cleaning the contact surfaces before balancing ensures correct results. Includes 3 spare grinding wheels (diameter 160 mm). Features a hook and loop fastener for quick changing of grinding wheels. The open-pored abrasive material and cup-formed grinding wheel reduce dust formation to a minimum, with no sparks generated. Total number of tools: 3.