LED Indicators, 16mm Mount, 12/24Vac/dc 10mm colored diffused round or low profile flat lens styles 18.3mm Bright Chrome or Black Chrome brass bezel Mounting hole size: 16.2mm to 16.4mm Sealed to IP67 Operating temperature of -25°C to +60°C 0.11in. (2.8mm x 0.8mm) terminals Supplied With: Fixing nut, washer and gasket.