Oil lubricated, Low maintenance operation. Equipped with pressure regulator, pressure gauge, quick connect air outlet, safety valve, on/off switch. Fully automatic control system aims at operation convenience, safety and reliability. Designed for professionals and serious do-it-yourselfers, the versatile for the home, shop or job sites. It can power impact guns, ratchets, grinders, drills, nailers, paint sprayers, sanders and more.