Nilight A9 H4 LED Headlight Bulb, 100W 20000lm 9003 / H4 LED High Low Beam, 700% Super Brighter H4 / 9003 / HB2 LED Headlight Bulbs, High Low Beam 6000K Cool White, 2-Pack. The efficient heat dissipation cooling system consists of an Aviation Aluminum hollow-carved heat sinks and 12000 RPM silent and powerful turbo fan.