Black Pushbutton with Horizontal Microswitch. Fits wood or metal control panels. New longer design: Easier to use within 3/4" wood control panels with Lexan. Microswitch reliability tested to 10,000,000 cycles. .187" Terminal microswitch. Durable nylon material. Pushbutton mounts in 1-1/8" hole. Concave Plunger Design.