When trenching is impractical, Hole Hammers let contractors install irrigation or utility lines. The tool bores holes for telephone, water, or gas lines, and electrical cables under streams, driveways, walks, or patios.

Available in four sizes from 2 1/8 inch to 4 1/8 inch, accessories are available for expanding hole sizes, pulling pipe, and tracking the tools. A heat-treated alloy steel barrel and nitrated steel piston give wear resistance.

Air-assisted forward and positive-lock reverse use air pressure to hold the tool in forward position. Rotating the hose 1 1/2 turns locks the tool in reverse.

Dave Gasmovic, McLaughlin Mfg., 2006 Perimeter Rd., Greenville, SC 29605; Tel: (800) 435-9340.