SuperTek EDR10 Dancer Replacement arm and insert

We broke the arm that came on our unit and SuperTek quoted us 164 Euros for a replacement arm with insert (plus an M4 threaded nut) and 145 Euros for shipping. It cost us less than $0.20 of material to print a replacement one after I reverse engineered it.

This item from them is 3D printed as well, not some high end injection molded or machined part. 

The center distance is 80mm.

You'll just need the M4 nut out of your broken insert and the M4x16 cap screw as well.