The Sidewalker piercing tool from HammerHead Trenchless Equipment is designed for installing short utility runs beneath landscaping, driveways and sidewalks. Upgrades to the 2 1/2-inch and 3-inch models have increased efficiencies in design and pneumatics, including the quarter-turn Power Port Reverse feature, which boosts impact power by up to 25 percent. The 3-inch Sidewalker has a uniform profile along its entire length, increasing striker size. 800/331-6653; www.hammerheadtrenchless.com.