QWORK® 100 Pcs 3mm Pre-wired LED Diodes Kit, 5V-12V 20cm 5 Colours Lights with Plastic Holders High Conductivity Copper Wire for Model Railway, DIY Hobby, RC Car & Electronic Projects

[CONVENIENCE]: Pre-wired with built-in resistors for 5V-12V circuits, eliminating complex soldering. Perfectly solves the need for immediate, hassle-free lighting in intricate model railway layouts and DIY electronics. [SUPERIOR CONDUCTIVITY]: Features 20cm 7-core pure copper wires for stable electrical contact. These 3mm LEDs offer a 20,000+ hour lifespan, ensuring long-term reliability for permanent hobby installations. [VIBRANT MULTI-SCENE USE]: Includes 5 bright colours (Red, Green, Blue, White, Yellow) to suit diverse needs. Ideal for RC vehicles, dashboard indicators, and creative craft decorations for hobbyists. [PROFESSIONAL MOUNTING KIT]: Equipped with 100 matching plastic LED holders to ensure secure, flush-mount installation. Provides a neat, professional finish while protecting the diodes from movement and vibration in mobile RC projects. [EASY POLARITY IDENTIFICATION]: Designed with standard colour-coded leads (Red for Anode, Black for Cathode) for error-free wiring. The comprehensive 100-piece set provides everything needed for high-volume lighting tasks and science experiments.