Powerbuilt Professional Technician reversible ratcheting combination wrenches are built to meet or exceed ANSI specifications for length, torque and hardness. They have chamfered edges on both the open and box ends of the wrench for easier mating to fasteners. The box ends feature a reversible 72 tooth ratchet for fast direction changes without lifting the wrench. The box end also features Z-Drive™ broaching for a stronger grip on fasteners. The open end faces feature broached grip teeth for reduced slippage. All combination wrenches are made from high quality Chrome Vanadium (CR-V) steel with mirror polished chrome plated finish.Powerful, precise and stylish, Powerbuilt wrenches offer the look, feel and performance hard-working Techs deserve. A no questions asked replacement policy and lifetime warranty ensure it'll be a long-term relationship.