I don’t know if Simon has changed but the clips I bought for my M21B here have Phillips head screws size M2x4.5mm that are too short for my M21F’s and M21E’s. I found M2x6mm and M2x8mm that work well in case you’re interested.
The kit is available from Amazon here. BTW personally I much prefer the look of the Allen head screws (vs Simon’s Phillips head).
