Quick video from Laylax showing the Nineball Valve Wrench that is designed for gas blowback airsoft guns from Tokyo Marui in this Hi-Capa 5.1 maintenance video. The valve wrench is not only suitable for Tokyo Marui GBB’s and GBBR’s, but also for a variety of gas blowback guns. For those requiring additional grip and torque, inserting a screwdriver of 4mm diameter or less into the hole in the central shaft provides an immediate extra point of contact for assistance.