Could you inform me what’s difference between auto halogen bulb 042 and 041?

Although my factory produces auto halogen bulb for a long time, I don’t know clearly 042.

Most of our auto halogen bulb 042 using “Anti-uv quartz glass”.

So our auto halogen bulb 042 has best heating dissipation.

And the life time of our auto halogen bulb 042 will be about 800-1200 hours.

Meanwhile, our auto halogen bulb 042 plug and play.

Due to we are manufacturer, the price of our auto halogen bulb 042 also very low.