I created this model to keep sawdust / drywall dust from falling down into my floor drains and drain tile.
There are two versions of this model, one is a loose fit and the other is a press fit. You may need to trim the tabs on the press fit version to match your pipe.
There is a ¼-20 thread in the center so you can add a bolt and pull it out.
The author marked this model as their own original creation.