Simple little holder for threaded insert bits.  I have designed it to be a tight sliding fit into the extruded frame of my insertion tool. This is the insertion tool I have: [https://amzn.eu/d/ioa7rOX](https://amzn.eu/d/ioa7rOX) it has a 6.45mm wide slot and 1.5mm thick edges.  The insertion bits rest in the holes on the top of the holder.