The protector is virtually invisible and does not affect the touch operation. The enclosed instructions are a bit confusing, but watching their video tutorial helps out a lot. And it helps to locate and watch their installation video don't try to find...  Read More

At the very least there should be a discernible difference between the 40degree (white) an 15degree (yellow) tips. These are useless because not only is the nozzles not marked the plastic bags they were shipped in are not marked either.