T10 194 Xtreme LED Bulbs: Xtreme LED T10 / 194 ceramic LED Replacement bulbs can be used in both exterior and interior LED light upgrades. These compact bulbs feature a genuine CREE LED emitter for a pure-white 60 lumen output - which makes them approximately 20% brighter than the 50 lumen requirement. Thermal Management: The body of the bulb is made entirely out of ceramic to ensure the bulb can withstand higher environment temperatures--way better then lower priced plastic alternatives. We've also taken the pioneering step of mounting the CREE LED diode right onto the ceramic body to create the highest possible heat dissipation efficiency -- they're bright and reliable. Dare to Compare: You'll find alternate T10 LED "tower style" with multiple diodes, or similar looking plastic models, but you'll find that many other simply won't fit in a T10 application, or produce sufficient light output. Our miniature ceramic design ensures you'll have no fitment issues, and the IEC spec base ensures the bulb properly connects into your vehicle's stock harness.