This is a set of four Torx wrenches (T6, T8, T9 & T10) manufactured by Microtech. These common sized Torx bits will fit many older Microtch knives as well as other knives with Torx screws. The bits and handle are all steel. The bits will also fit most any screwdriver with interchangeable heads. The bit heads are held in place with a magnet and the two lose bits fit neatly into the tool's handle.
These wrenches are sold only as tool to adjust your screws. Disassembly of your knife will void your warranty. We know some of you will be unable to resist though... we couldn't! If you find the screws are tight don't try to force them or you could shear the wrench teeth. Heat up the screw to loosen any loc-tite that is present.