A wired, dynamo powered bike tail light designed to mount on the rear of a carrier rack. The mounting holes are 50mm apart so it will work with any of the Tubus racks we sell. It will work with the Salsa Wanderlust racks as well. A small light this one, but the the light from two LEDs is spread into a line across the width of the light, providing increased surface area for the light, and making it more visible at a distance. As the dynamo hub on the wheel slows down when the bike comes to a stop the LED's become brighter, acting as a brake light!