Product review (5 stars): All the parts you need to fix a sticky disposal switch
My old switch was rusty and sticking on (very dangerous) due to a corroded actuation plunger (the part that slides back and forth from the opening to the microswitch). This kit includes both the microswitch itself as well as the plunger assembly that is actuated by the cover. Everything is working like new now.

Cover is now plastic instead of metal and comes with a new (shorter) screw