I was very surprised by how easy these filters were to install on my Hella lamps. You just want to make sure that the glass is very clean and I would highly recommend buying clear plastic lens covers to protect the film (and your glass). I really expected some cheap, thin film, but I was actually impressed by how thick the material is. These filters definitely cut snow glare and improve visibility. It's also nice that you can remove the filters during the summer months and reinstall them for the winter. Definitely a nice value for the money.

after taking too many rock ... and having a collection of hella cracked lens ... finally an overlay ... although somewhat expensive ... installation tabs are unnecessary ...