This pocket-size tool kit is a complete disassembly tool for the XM folder. It includes a built-in spanner wrench, which makes it very easy to hold both the wrench and the knife at the same time while making pivot adjustments. The head unscrews from the main body, which contains a precisely machined screwdriver blade that matches the slot on the pivot screw of the XM-18. The head will also hold any standard 1/4″ bit. In the case of the XM-18 it is a 5/64″ hex that works on the handle screws. The crossed drilled hole in the male end is there so you can use it as a “T” handle for extra torque. These are made from 17-4 PH hardened stainless steel, with a bead blast finish. Excellent condition.