ProBEAM? Dynamic Ringz* Turn Signals - 1157 Uses advanced LED technology to maximize performance with a unique reflector technology and automotive grade LEDs composed into a sealed unit, Replace the factory front turn signal bulb and lens with bullet style turn signal housings, The outer ring of 24 white ProBEAM? LEDs showcase a smooth white halo that functions as the running light while 12 center amber LEDs function as the turn signal, When a turn signal is activated the white LEDs turn completely off for the entire turn signal cycle providing greater visibility to the amber turn signal