Bosch Angle grinder nut Key

needed a key for my old 230mm Bosch angle grinder. So I made one that takes M3 screws as they fit in to the holes of the disk nut.

Length of the screws doesn't matter. Also takes M8 as a leaver 

my model:

Bosch Blau Winkelschleifer 230mm 1800W RPM: 6500/min 0 601 322 903

will might also work with different models