Traxxas 5247 to Carbon Tube Coupler With Compression Lock

This coupler was created to serve a specific purpose: to connect the Traxxas 5347 ball joints to 1/2" carbon fiber tubes for use on the large Delta style 3d printer I'm creating, based on parts and designs for the Mini Kossel.

I'm using 24" long and 0.5" outer diameter carbon fiber tubes for the effector arms. So there is a bit of a "gap" between the Traxxas joint shafts, which measures around ~7mm in its outer diameter.

The inner diameter of the Traxxas shaft takes an M4 threaded bolt.