The following are included in the inventory of AO/ASIF compressed-air machines. The small air drill, reversible, with quick-coupling. It has become a standard machine, though it is unsuitable for medullary reaming. The medullary reaming machine with quick-coupling for flexible meduhary reamer shafts. The oscillating bone saw for osteotomies. The universal drill with keyless Jacobs chuck and corresponding right-angle drive can be used for drilhng screw holes as well as for intramedullary reaming. The mini compressed-air machine with mini quick- coupling, especially designed for surgery of the hand and mandible.