Setting a new standard for air excavation tools, the Utility AirSpade 4000 Series harnesses the power of compressed air to safely uncover underground utility lines without harm. AirSpade's high-performance, patented supersonic nozzle generates a laser-like jet that moves at twice the speed of sound for faster, more effective digging. With non-sparking nickle aluminum bronze blend nozzle and components, electrically insulated 4 ft barrel rated to 300kV, and a lightweight, ergonomic handle, the Utility AirSpade 4000 maximizes jobsite safety while minimizing operator fatigue. Aluminum handle features full size grip opening to accommodate linesman's gloves. Dead-man trigger ensures safe operation and trigger guard prevents accidental activation. Retractable stabilizer bar provides superior operator control. Integral pressure gauge ensures optimal digging performance. Rugged, ergonomic handle with plastic-coated grip. Meets Regulation SAE 100R7. Retractable stabilizer bar and integral air-pressure gauge. Dead-man trigger with trigger guard. Insulated, 4 ft fiberglass barrel rated up to 300kV. Non-sparking brass barrel sleeves and threaded connectors. Adjustable, rubber spray shield. Non-sparking, nickle aluminum bronze blend supersonic nozzle; 105 and 150 cfm available. Inlet: 3/4 NPT. Chicago-style swivel connector