Powerbuilt Technician Tool Sets are designed for vo-tech students and working professional technicians. Each set gives you hand-picked tool assortments that offer wide coverage and utility. The 261 Piece Technician Starter Set includes tools and accessories for tune-ups, repairs, and engine rebuilds. The set includes 146 1/2-inch, 3/8-inch, 1/4-inch drive tools, 57 wrenches, 6 pliers and 24 drivers, 16 striking/struck tools, and other tools and accessories. Ratchets feature comfortable chrome vanadium sealed head construction and reversible precision-built 72-tooth mechanisms. Hex Z-Drive chromed sockets feature jumbo-size markings forged into the metal; precision chamfered hex faces make it easier to guide them onto fasteners. The exclusive Z-Drive hex pattern grabs and turns the flat surfaces of those fasteners to reduce round-off and slipping. Combination wrenches and pliers are constructed of superior chromoly steel heat-treated for maximum strength and performance. Drivers and Pliers feature double-dipped handles with a matte finish for a sure, comfortable grip. Cutting edges are induction hardened for lasting sharpness. Screwdrivers Combination wrenches are constructed of premium chrome vanadium steel mirror-polished to a flawless finish. Tools meet or exceed ANSI standards and come with a lifetime replacement policy warranty if a tool should ever fail.