Easily locks in place or removes with just a twist of the wrist. Fits all wire cages - horizontal or vertical bars. Easy to clean. Dishwasher safe. If you have parrots who think it's great fun to pull the food dish out of it's holder and watch while it crashes to the floor of the cage, the LIXIT LOCK-CROCK is the answer! Easy for you to remove - nearly impossible for the bird!