Rack-Mounted COB LED Tail Light with Magnetic Mount Enhance your cycling safety with this powerful COB LED tail light, designed for easy attachment and reliable visibility. Featuring a magnetic mount compatible with 50mm rack mounts and the exclusive TetraRack system, it offers quick installation and secure hold. The tail light automatically turns on and off for convenience, with a bright brake light function providing up to 60 lumens to ensure you are seen in all conditions. Powerful COB LED: Up to 60 lumens for maximum visibility Magnetic Mount: Easily attaches to 50mm racks and TetraRack systems Auto On/Off: Convenient automatic lighting control Brake Light Function: Enhances safety by alerting following vehicles Versatile Compatibility: Fits 50mm rack mounts and TetraRack exclusive mount