Yep. If for some reason you can't use a thumbscrew and must live with a grub screw like a pleb. You better have one of these. Also by sheer coinkydink and probably no forethought and being clever at all, from tridos' side, this thing is also the best dismount tool for the rest of the NANO kit. You should never apply more torque than you can with two fingers on this thing and your gun will last forever.

It is good to keep some of these around if you have a nano kit and even if you are using the thumb screw instead of grub screw (which you should be) just because how useful this thing is and you might lose it.