Brite-Lites Bluhm Enterprises LED Taillight Bulb - Red - 1156 Revolutionary 360 deg. design of LEDs around the base of the bulb Only LED taillight that will function in any mounting position and on any application Made of the highest-quality LEDs to emit the most light possible LEDs draw extremely little electricity, are vibration resistant and last up to 10,000 hours of use 1156 and 1157 have round metal bases and the 3156 and 3157 have flat plastic bases