The Roughneck R200 from HammerHead Trenchless Equipment is a 2-inch rock hammer engineered specifically for horizontal drilling applications. It is designed to expand the capabilities of small utility drills allowing 7,000- to 10,000-ton-class directional drills to drill through solid rock as well as other difficult soil conditions. The R200 drills a 3.125-inch pilot hole and has electronically controlled airflow that can be adjusted on the fly. 800/331-6653; www.hammerheadtrenchless.com