Designed to work with our VUPN7213 LED module. Contains several arrays of threaded holes to provide easy mounting of an LED module, lens, and other hardware. All the threaded holes have M3x.5 threads. This heatsink is 135.0 mm in diameter and 28.0 mm thick. A standard 92mm computer fan can be attached to the back of this heatsink with standoffs to provide additional airflow. This heatsink could double as a wheel for a robotic rover.