Feature:1. Enjoy a long lifespan of over 10,000 hours, with consistent light emission and excellent performance. 2. Precision CNC machining technology and a one-piece metal shell provide high structural strength, resistance to drops, and collisions. 3. The product is waterproof and dustproof, featuring a built-in waterproof sealing ring for added practicality. 4. Utilizes a high-temperature flame-retardant base and fire-resistant wire, offering flame retardancy in emergencies and enhanced conductivity. 5. Common cathode electrode means that 2-color indicator lights share a negative electrode. Specification:Item Type: Pre-Wired Round LEDs Material: Brass Chrome Plated Applications: Car Modification, Computer Modification, Access Control Switches, CNC Machine Tools, Industrial Control Instruments Installation Size: M10 x 0.75 Feature: Common Cathode Electrode Light Source Type: LED Working Temperature: -40~70/-40~158 Working Humidity: 10%-90% Shade Type: Flat Head Protection Level: IP67, IK10 Size: Approx. 10mm / 0.4in Features: Common Cathode Electrode Means: 2-color indicator lights share a negative electrode After selecting the common cathode electrode, the black line is the common negative 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 Indicator 4 x Compression Nut 4 x Washer