Gennuine Happ Blue Pushbutton with Horizontal Microswitch   Part # 58-9122-L   Fits wood or metal control panels New longer design: Easier to use within 3/4" wood control panels w/ Lexan Microswitch reliability tested to 10,000,000 cycles .187" Terminal Microswitch Durable NYLON material Pushbutton mounts in 1-1/8" hole