The eliminator spinner uses centrifugal force to spin the plate down when feeding.
Centrifugal force defined: is the apparent force that draws a rotating body away from the center of rotation. It is caused by the inertia of the body.
When done feeding, the plate locks in upright position, eliminating the loss of feed to bumpy roads (if on your road feeder) and varmints (when on your broadcast feeder).
Raccoons are unable to spin the spinner when in the off position, and cannot pull it down due to the locking nature of the side links.
This plate will save you money and time, and allows easy install without requiring the use of a varmint cage.