The finest tool's made for Blue Printing your
motor are from Magnehone!
This tool will radius your motor brushes to the size
of your armature commutator which will then
require less break in time and faster motors!
Two sides .180 & .193 to radius your brushes!
.180 side is for Parma 501 & 502 16D & S16D Arms (non American Arms)
.193 side is for all American made arms