Check the listing for details. 10PCS AC/DC 110V Indicator Lights Flush Panel Mount 7/8" 22mm Red Green. Condition: New. Listed at 17.33 USD. Guiding LightsGeneral Information：[1]Widely used in the ship, machine tools, machine equipment, switch cabinet and power distribution cabinet, electrical control panel such as HVAC Panel and electrical Panel, DIY Projects such as PLC Training Project[2]Industrial standard 22mm (7/8") mounting diameter[3]Flame-resistant housing and high strength. Low behind the panel depth (37mm) and come with a panel locking nut (Fits Panel Thickness: ≤6mm)[4]Screw-clamp connection provides firm contact for reliable operation. Simply drill hole, and use the included screw ring to secure this indicator light. Tested over 20,000 hours of using time, they will surely offer a steady performance[5]RED + GREEN LED indicator lights drove with AC/DC 110 VOLT.