For the DIYers and modders out there, these 10mm LED indicators are super handy. You get 4 complete sets in the pack - each includes the LED itself, compression nut, and washer. They're common anode design, meaning the red and blue colors share a common positive electrode. Working voltage is 3-6V, so they're versatile for different projects. The brass chrome plate construction feels solid and durable - made with high-accuracy CNC machining for consistent quality. They're rated IP67 for waterproofing and IK10 for impact resistance, so they can handle tough environments. Perfect for car modifications, computer builds, access control systems, industrial equipment - anywhere you need clear visual indicators. The installation size is M10 x 0.75 thread, making them easy to mount in standard holes. Temperature range is impressive too - they work from -40 to 70°C (-40 to 158°F), so extreme conditions aren't a problem. The flame-retardant base and fire-resistant wires add an extra safety margin. These LEDs put out really uniform light with a 120-degree viewing angle, and they're rated for over 10,000 hours of use. The red emits around 650mcd, green 520mcd, blue 460mcd - nice and bright for clear visibility. Whether you're building a custom PC, adding indicators to a vehicle, or setting up industrial controls, these pre-wired LEDs save you time and hassle compared to wiring your own.