IVSO Tempered Glass
Another quality brand with high-rated products is IVSO. And while the image is of an older OnePlus 5, the company tells us this new screen protector fits the OnePlus 5T perfect.
Basically, if you've enjoyed IVSO in the past, give this a try. It's your typical tempered and reinforced glass. They have a 9H hardness rating, crystal clear clarity, and have extra coatings to prevent fingerprints. These days most screen protectors are pretty similar. It's the fit and finish that's important.
They offer a lifetime warranty too. So if it ever has a problem, get another one hassle-free.