The Destaco Air/Hydraulic Power Booster converts normal shop-line air pressure to high-pressure hydraulic power. The two models available provide oil displacements ranging from 1 cu. in. to 4 cu. in. per stroke. With the system filled, the volume of oil required to actuate a cylinder or pressure point is only equal to the cubic content of the piston displacement. The small booster, producing 1 cu. in. of usable oil per stroke, can operate 50 of the tiny 1/2-20 pressure points a full .22 max. stroke, and even more when strokes are kept to a minimum.