Featured exclusively on AirSpade air-excavation tools! AirSpade?s patented design turns compressed air into a high-speed, laser-like jet. This jet moves at Mach 2 — twice the speed of sound! These supersonic nozzles deliver superior performance. These nozzles provide much faster and more efficient excavation than standard methods. Use them to uncover buried utility lines, pipes, or even sensitive tree roots without causing damage! Compressed air requirements vary depending on nozzle type and range from 25 to 225 CFM at 90 psi. 25 CFM is enough to move mulch or pine straw off a landscape bed. Mounts on the standard AirSpade 2000 Series barrel. Choose your desired flow rate below.