Geared mxus xf07 parts size questions

I need to find key and fixator parts size for mxus xf07 motor. My mate lost these parts and I need to get them but I don't have access to the motor to measure it. Can you measure or maybe remember by-heart.

1. Square Rectangular Keys size? My approximate guess is 8mm x 5mm x 5mm
2. C-type Snap Lock Retaining Ring size? My approximate guess M8
3. C-type Snap Lock Retaining Ring size which is put on axle on gear side? My approximate guess M15