Quad Lock Screen Protectors - iPhoneUsing Tempered Glass, you can be confident that QuadLock Screen Protectors will protect your iPhone will be protected from everyday scratches and smudging. ULTRA THIN The Quad Lock Screen Protector is designed using an ultra thin tempered glass material: 0. 3mm thin to be exact. So thin, you will barely notice it's there! SEAMLESS FIT Designed to work with QuadLock Cases, the Screen Protectors leave just the right amount of tolerance at the edges for