This listing is for two "flat" tri-wing bits that fit the Microtech Crosshair knife and other Microtech fixed blades with the same size screws. The bits are black coated steel with a 3/8" hex base. Two bits are required for adjustment, one for each side.
This bit is sold only as tool to adjust your screws. Disassembly of your knife is done at your own risk and you are liable for any misfortune.