Utilizing the power of compressed air, AirSpade 2000 uncovers underground objects, utility lines, or even sensitive tree roots without harm. Featuring the high performance, patented supersonic nozzle, AirSpade 2000 digs faster and more efficiently than competitive tools. Rugged, lightweight construction. Dead-man trigger ensures safe operation. Non-conductive, fiberglass barrel provides degree of protection from buried electrical lines. Compressed air requirements: 25 - 225 cfm @ 90 psi.