A mount that replaces the extruder on a Maker Select V2 and holds a drag knife. The one I used was from here:
https://a.co/d/i1PQq0V
The spring is from the printer's bed levelling (I switched mine to 3 point levelling and had an extra).
Requires 4 M3x8 bolts and nuts (for assembling the mount) and 2 M3x10 bolts and nuts for attaching to the hotend bracket.