Fixfork for quick release and 15mm axle (racebike and mtb)

I designed this axle holder so I don't have to swap between holders in our minivan, I have a cyclocross and a MTB. I don't carry the 2 bikes at onces.
for pictures, https://www.thingiverse.com/thing:2366261 . Here you see the version with only 15mm axle holder.

hope you guys like it!
p.s. I can design it also for 12mm axle, hit me up if you want me to help you out!