The ultimate handpiece has a unique 3 bearing system for smoother running, greater comfort, less back end heat, and less maintenance. The 3 precision ball bearings are fully sealed and lubricated for life so there is no oil hole screw and the most common source of overheating is eliminated. Proven in Australia. Combs and cutters interchangeable with all other brands of combs and cutters, including Oster, Lister, Andis, Heiniger, Aesculap.