High-speed lab air handpiece with a cool-mist spray. Recommended for all-ceramic, zirconium, CAD/CAM, and ceramics. Prevents heat buildup from friction during grinding. Can be used with or without the cool-mist spray. No oil or gel-type lubrication needed. No metal ball bearings that heat up and wear out. High-temperature zirconium-ceramic bearings. Encapsulated turbine-cartridge. Bur insertion tool (BIT) automatically positions and perfectly glides bur into chuck. Quick touch bur removal. Independent, long-life chuck screws out separately from sealed turbine-cartridge.