●【Design for iPhone 13 Pro Max Cage】The lens backplane is designed for iPhone 13 Pro Max cage-3561. You can use this backplane to replace the M mount backplane of the original cage to meet the needs of adapting lenses of different specifications. ●【With External Lens Mount】Thanks to the design of the lens mount, the lens backplane can be connected to a 17mm threaded lens, which can further improve the picture quality of mobile phone shooting. The lens backplane size is: 91 x 51.5 x 5.8mm. ●【Broad Vision】The hole position of the lens backplane is designed accurately, which is completely suitable for iPhone ultra-wide-angle lens. It does not block the lens and provides you with a wider field of view. ●【Robust and Wear-Resistant】All aluminum alloy material is perfectly compatible for iPhone 13 Pro Max Cage. At the same time, it has the function of protecting the Phone lens, scratch-resistant and wear-resistant, which can greatly improve the service life of the mobile phone lens. ●【Package Content】The package include:1 x threaded lens backplane for iPhone 13 Pro max cage, 3 x screws, 1 x wrench. The installation is simple, only two steps are required to complete the installation of the lens backplane.