Featured exclusively on AirSpade air-excavation tools, the supersonic nozzle delivers 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 Nickle Aluminum Bronze construction. Compatible with all AirSpade 4000 components and accessories.