New specification that not only handgun valve but also Marui gas blowback M4A1MWS magazine valve is compatible! It is a wrench that can disassemble both main valve and injection valve. By adopting a center folding type joint type it is possible to use like a wrench when you need torque, such as when tightening, like a screwdriver during rotation. If you need speedy work or optimum tightening torque, please use this product straight (straight). Also, when removing the normal valve for the first time, it may be tightly tightened, so it can be easily removed since it can be torqued by bending the product to 90 degrees. Please be careful not to overtighten the valve. There is a fear that it may cause deformation and breakage of O ring and valve.