Set of 12 interchangeable screwdriver blades including TX, hex as well as Phillips & Pozidrive heads. With chrome vanadium steel blades. Supplied in the unique Teng Tools TC tray with removable lid & dove tail joints for use on it’s own or as part of the Teng Tools TC control system. All Teng Tools screwdrivers are designed to have a hole in the handle which can also be used for securing the tool with a fall protection wire if needed.