yes , 3" inch pvc elbows ....
Found a small floor drain face that slips into the elbow and screwed the drain face to the backing then slipped the elbow on with a small hole drilled thru the drain grate flange and the wall of the elbow for a "pin" or small nail for locking pin.
There is room inside the elbow for storage of small items to go along with the die set ... as the elbow can slip off with the locking pin removed.