The Workpro W022013 Wrenches set is a 9-piece set of Torx® wrenches made of chromium-vanadium steel. These wrenches are perfectly suited for the repair and maintenance of both industrial and consumer electronics. In addition to their durability, they offer greater torque transmission as well as great corrosion protection due to the chrome plating on the surface. The ergonomically designed handles make it easy to carry and use the wrenches comfortably. The included sizes are T8, T10, T15, T20, T25, T27, T30, T40, and T45. The set also comes with a convenient carry case.