We offer high quality of D-series HID bulbs with all models: D1S/D1R/D2S/D2R/D3S/D3R/D4S/D4R1.hid bulb Parameters:We are specialized in HID Conversion kits, HID Xenon lamps, HID Xenon ballasts, LED Daytime Running Lights,car logo lightsand other LED lamps.Our products have been approved by ISO9001:2000, CE and E-MARKcertifications.Hopewe are helpful for you.12monthsWe willreplacenew ones or fix without charges if anyquality problems within the warrantytime.