MICRO SWITCH™ Premium Large Basic Switches: BZ Series, Single Pole Double Throw (SPDT), Split Contact Construction Allowing Two Isolated Circuits, 5 A 250 Vac, 12,7 mm [0.50 in] Threaded Bushing with 8,3 mm [0.326 in] Diameter Hardened Steel Additional Overtravel Plunger, Binding Head Combination Screw Termination with Integral Washer, Furnished with 1PA11 Hardware Packet, Mounting Holes will Accept Pins or Screws, UL, CSA