I think 60/55 watt halogen headlight bulb means h4.

Because h4 60/55 watt halogen headlight bulbs are big quantity in the world markets.

All of our 60/55 watt halogen headlight bulbs are all using “ANTI-UV QUARTZ GLASS”.

So our 60/55 watt halogen headlight bulbs have a good life time.

Meanwhile, “Anti-uv glass” can prevent uv ray against auto lamps.

Due to my factory value quality beyond other things, our 60/55 watt halogen headlight bulbs are hot sale now.

In addiational, the price of our 60/55 watt halogen headlight bulbs are also very cheap.

If you can give our 60/55 watt halogen headlight bulb a chance, I am sure you can save so much time and money.