The GripEdge Tools 38-pc Master Hex Kit, No. MH38S features all hex sizes between 1.5mm and 19mm, as well as between 1/16" and 3/4" with no skips. Each bit uses Rounding Prevention Technology to deliver up to 50 percent more prevention torque on regular fasteners and up to 400 percent more torque on damaged fasteners than standard tools according to the company. The bits' bi-directional geometry prevents rounding and grips compromised fasteners. The kit comes in a foam tray inside a molded case.