The 6.9 cm (2.7 Inch) [58 x 33 mm] is a measurement used to determine the size of the screen protector required for a specific device. Our website sells a range of screen protectors that are designed to fit this size, ensuring that the device's screen is protected from scratches, cracks, and other damage. By providing the exact measurements, customers can easily find the right screen protector for their device, ensuring a perfect fit and maximum protection.