... Glass 2)Base: SS BASE 3)E-MARK CERTIFICATED H4 auto bulb used for head light of cars 1.Korea process equipment ... Auto bulb and Motorcycle bulb: 1)WEDGE BULB: T5 ,T6.5 , T10 , T13 , T15 , T20 , 3156 , 3157 2)STOP&TAIL/FLASHER BULBS: S25 BA15S(1141),S25 ... ,884,885,886,889,890,892,893,894,896 H4 Auto bulb