Naza gps Tailboom mount trex 600

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/4ywdklWJWJg
I have not printed one of these up yet.As I dont have a printer yet. Its for a Trex 600 tail boom which is 21.5mm. This is also My first design and I wasnt sure how to make the bottom half into 2 pieces. I figured Id cut that with a hand saw later.