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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 Mach 2 twice the speed of sound. The result is faster and more efficient excavation, uncovering underground utility lines, pipes, hazardous material containers, or even sensitive tree roots without harm. Mounts on standard AirSpade 2000 barrel. Compressed air requirements: 25 - 225 cfm @ 90 psi. Features: Extra-hardened, 416 stainless steel constructionPatented internal geometryPrecision machined to exact tolerances Female threaded connection