The Lock Technology Kentucky Kicker Shockit Driver Kit, No. LT1940, is air hammer powered and available in 3/8", 1/2", and 3/4" sizes. Each kit includes four tools: short throw Shockit driver, long throw Shockit driver, low profile drive plug, and a plug breaker bar. The low profile drive plug allows for use in tight spaces with an air hammer and the plug breaker bar allows breaker bar and air hammer simultaneous operation. By repetitive hammering, users are able to remove stubborn nuts and bolts. The tools must be used with Shockit Punches (sold separately) for maximum performance and warranty coverage, the company says.