Provides a rigid mounting adapter for your coffee mill, so that you can screw it to a fixed surface. Large hole in the bottom to allow your ground coffee to drop through into whatever container you wish. The inner diameter is sized to accept a piece of 2" PVC tubing which may be either glued in place or a piece of thin tape can be wrapped around the pipe to give a friction fit into the adapter. This would give you a "drop tube" if you wish.
Note: This adapter fits the coffee grinder made by
Youlanda on Amazon. It may or may not fit grinders by other makers.