Hangs on the outside of the cage for the bird to stick their head in for feed.
 
1 Hole: For feed use only. Has small slits in the back.
 4"L x 4"W x 6"H
 
2 Hole: Has small slits in the back on one side for feed or grit. The other side is solid. Could hold water.
6.5"L x 3.75"W x 5.5" H