PB2 LED turn signals in black aluminum with amber lens approved Led turn signals with black aluminum body, approved. Although very small, they have a diameter of only 20mm, thanks to the powerful LED with which they are produced, these indicators manage to remain clearly visible even from a distance. They guarantee maximum safety, and do not affect the aesthetics of the bike. ECE approved. NB If the motorcycle is fitted with indicators with halogen bulb, it is mandatory to fit a resistor to make these indicators work correctly. Click here to buy it. Technical features: Lens diameter: 20mm Arrow length excluding bolt: 37mm Arrow head depth: 44mm Fixing bolt: M8.