InSinkErator 75257 Magnetic Activation Stopper
This stopper is made for InSinkErator batch feed garbage disposers. The stopper activates the unit by turning the handle inside the sink opening.
How it works
This part is used with the switch 74052B mounted on the housing below the sink. The housing the switch attaches to is part number 03173ED.
The magnets inside the stopper open the switch which then activates the disposer.