The Checkpoint Stud and Hub Cleaning tool quickly and effectively removes rust, corrosion and dirt from medium and heavy trucks' rotor, drum brake, hub and studs. This helps to ensure the secure fitment of wheels and wheel nuts to minimise the risk of a wheel detachment. It also prevents the hub from running off center leading to vibrations, accelerated wear and tear on bearings and other components. When cleaning, rotate clockwise onto the stud and counterclockwise off the stud. Excessive force is unnecessary - there is no need to push or pull the tool while on the thread. The Checkpoint Cleaning Tool will last way longer than anything else on the market.