MICRO SWITCH™ Premium Large Basic Switches: YA Series, Single Pole Normally Open (SPNO), 20 A 125/250/480 Vac, ENEC 20 A 250 Vac, 7,11 mm [0.280 in] Diameter Stainless Steel Additional Overtravel Plunger, Binding Head Combination Screw Termination with Lock Washers, Mounting Holes will Accept Pins or Screws, UL, CE, CSA, ENEC