With two cats/dogs that don't share a single bowl well, this adapter is just what you need to feed both cats/dogs at once. Expect a nice snug fit to the feeders dispenser and equal portions in each bowl! Note that this product is designed to fit very snug into the feeder, so it may require more force to insert it properly. Once inserted properly, the adapter will not fall out of the feeder. Only compatible with the PetSafe Healthy Pet Simply Feed Automatic Feeder (ASIN B00VIXRB6O). Please note, pet feeder and bowls are not included.