Small Oldham Coupler for Tevo Tarantula

Hi,
this is my version of the oldham coupler for my Tevo Tarantula with two z-axis.
I made this version because I don't have enough room on my setup for other couplers.

I printed the middle part with support.
Top and bottom parts can be printed without support.

3mm screws are screwed directly in the part. No nuts. I used a screw tap for that.