Features: Enhances your FPV quadcopters performance with for DJI O3 VTX Heatsink, keep for O3 Air Unit cool during intense flights. Machined metal heatsink offers superior heat dissipation, ensuring your video transmitter operates efficiently without the risk of overheating. Improved cooling performances for the highly power draw for O3 video transmitter. Perfect for long duration or high intensity FPV racing and aerial photography session where maintaining optimal equipment temperature is crucial. Easy installation, making this a must accessory for any serious RC enthusiast looking to upgrade their capabilities. Specifications: Size：About 29.5x29.5x7mm/1.16x1.16x0.28in Component：Metal For O3 unit Transmitter Note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color. Package includes: 1PC Heatsink