Feature: 1. Suitable Scene: Spitfire tracer flash unit is suitable for 11mm cw, 14mm ccw, 12mm cw, 18mm, and 19mm direct plug. Please confirm whether your model is applicable before buying. 2. Multiple Luminous Colour: The fluorescent effect tracer unit has a total of 9 luminous colors, allowing for a more colorful light ballistic fluorescent spitfire effect. 3. Low Battery Auto Shut Off: The spitfire tracer flash unit has a safety design that automatically shuts off when the battery is low. 4. Highly Visual: The tracer unit presents a real time visualisation of the laser trajectory through the spitfire fluorescence effect, allowing the player to see the trajectory of the laser more clearly. 5. Lightweight and Portable: The tracer unit is compact and portable, easy to load and unload, and easy to change at any time. Specification: Item Type: Tracer UnitMaterial: AluminiumArticle Number: EGW09 Battery Capacity: 500mAh Battery Type: 3.7V lithium battery (shipped with internal battery)Fitment:Fit for 11mm cw, 14mm ccw, 12mm cw, 18mm, 19mm direct plug. Package List: 1 x Host1 x Charging Cable1 x Instruction Manual1 x Red Thread1 x Black Thread 1 x Black Screw1 x White Thread1 x Wrench