The 16.5 cm (6.5 inch) [143 x 78 mm] is the screen size of a specific device that our website sells a range of screen protectors for. This device is popular among consumers and requires a high-quality screen protector to protect it from scratches, cracks, and other damages. Our website offers a variety of screen protectors that are specifically designed to fit this device's screen size, ensuring a perfect fit and maximum protection. Customers can choose from different materials, such as tempered glass or film, and different levels of protection, such as anti-glare or anti-fingerprint. With our range of screen protectors, customers can keep their device's screen looking new and scratch-free for longer.