Featured exclusively on AirSpade air-excavation tools, supersonic nozzles deliver superior performance vs. competitive nozzles, or open pipes. Patented design turns compressed air into high speed, laser-like jet moving at twice the speed of sound Mach 2. The result is faster and more efficient excavation, uncovering underground utility lines, and pipes, or even sensitive tree roots without harm. Non-sparking nickel aluminum bronze construction. Compatible with all AirSpade 4000 components and accessories.