Kellermann BL 2000 Stealth Handlebar Turn Signals Black

Atto (symbol a) is a unit prefix in the metric system denoting a factor of 10?18 or 0.000000000000000001. OK, these turn signals are not that small, but with its 13mm diameter the Atto is so small that the lighting surface fits on a 1 Eurocent coin four times. It uses Extreme Optical Transparency technology, providing spectacularly bright lighting. Features minimalistic M5x6.5 mounting stud and are sold each.