This product is a must have if you’re in a custom headlight bill don’t want any moisture building up.
A common problem in building headlights is not getting the heat out of the headlight as quick as possible causing the headlights to fog up due to temperature difference inside the headlights and outside these vents will upgrade the performance over a stock vents allowing more heat to exit and equalise the temperature in the headlight
these do require Drilling into your headlight shell to install vents
