The A2900 is compatible with GL-1, GL-32, and GL-33 fillers.The pressure ratio is 29:1.The A2900 offers greater output than comparable models at 0.58 cubic inches (9.5 cubic centimeters) per stroke.Pneumatic power supply makes it easy to install into existing air lines.Has factory installed low level detection.Integrated drain holes automatically and reliably release backhaul pressure without pressure switches or wiring.Made of high quality seals that are superior to similar products after testing.High strength, impact resistant, 4 lb (1.81 kg) storage tank.Lubricate the machine to the best effect while it is running.Accurate and reliable lubrication of each lubrication point.