AUTO-RETRACTION AIR HOSE REEL !!! ·Auto- Retraction air hose reel, Ratchet ratchet drive mechanism, the pull-stop ·Auto emission control devices, pipe recovery is neatly arranged, not wrapped. · Using in industrial areas as auto repair factory, 4S stores, machinery and ship buildingg, etc; ·Mainly used to transmit air for compressor, can also used to transmit fluid like thin oil and water, etc;· ...