for iPad Pro 12.9 (1st Gen) / (2nd Gen) Tempered Glass Premium Screen Protector Guard 9H HD Anti Fingerprint and Scratch 99.9% Light Transmission Perfect Touch

Also known as toughened glass, tempered glass is 4 to 5X stronger than normal glass and is made by heating glass and then cooling it very quickly, after which it is further chemically strengthened by a surface finishing process. Unlike traditional plastic screen protectors, tempered glass helps absorb impact from drops, leaving the phone screen below intact. Simply remove the broken glass screen protector and replace with a new one—a worthwhile investment since broken phone screens are expensive to repair.

This is a guide about glass film installation 1. Preparation: clean the screen using wet wipe cloth by remove dust and contaminants. 2. Keep your hands clean before peel off first protective layer (attached with label step1). 3. Carefully place screen protector on the screen to complete the installation process.