Feature: 1. The lamp emits uniformly, with a service life of more than 10,000 hours, which is very practical. 2. The one‑piece metal shell adopts high‑accuracy CNC machine cutting technology, has high structural strength, and is resistant to falling and collision. 3. High temperature resistant flame‑retardant base, flame retardant in emergency situations, fire‑resistant wire enhances conductivity. 4. The product has built-in waterproof sealing ring, waterproof and dustproof. 5. Common cathod electrode means 2 color indicator lights share a common cathod electrode. Specification: Item Type: Pre-Wired Round LEDsMaterial: Brass chrome plated Uses: Car modification, computer modification, access control switches, CNC machine tools, industrial control instruments Installation Size: M8 x 0.75 Voltage: 3-6V Function: Common cathod electrode Light Source Type: LED Working Temperature: -40℃~70℃/-40℉~158℉ Working Humidity: 10%-90% Shade Type: Flat head Protection Level: IP67, IK10Size: Approx. 8mm / 0.3inFeatures: Common cathod Electrode Means: 2 color indicator lights share a common cathod electrode After selecting the common cathod electrode, the black line is the common cathod electrode, the red line is the red light (positive), the green line is the green light (positive), red and yellow, red and blue are the same.. Package List: 4 x LED Indicator4 x Compression Nut4 x Washer