DIVEVERYDAY SD to M67 Adapter Ring is designed and developed to be installed on the rear end of INON SD mount wide-angle lens UFL-G140SD or macro lens UCL-G55SD / UCL-G100SD / UCL-G165SD, etc. It allows the SD mount lenses to be converted to M67 thread attachment and can be installed on the M67 threaded lens mount. The Adapter Ring is precision CNC machined from a single aluminum alloy block. It has an annular wave design in order to provide good anti-slip effect, and the hard anodized surface treatment provides the highest level of anti-scratch capability. After installation, the distance between the rear end of the wet lens and the front end of the lens of the waterproof housing would be 1 mm. This ensures that when the external lens is connected to the camera, the adapted lens is simply flush with the camera lens, which avoids excessive gap that cause the vignetting phenomenon, and provides the most ideal results. M67 thread is a mounting specification widely seen in underwater photography fields around the world. Most of the external wet lenses produced by well-known underwater photography brands such as Nauticam, INON, Weefine, SubSee, etc. have the same specification. Therefore, the patented DIVEVERYDAY Lens Adapter is also designed to be with M67 threaded mount. The popular Japanese brand INON has successively launched several exclusive lenses compatible with GoPro, however they are equipped with SD mount specifications and are mandatory with the corresponding GoPro lens adapter (SD Front mask). Since the SD and M67 mount specifications are incompatible with each other, users using INON lenses have no choice but to give up a wide variety of M67 lenses. After several months of development and adjustment, we are finally able to present the detachable SD to M67 adapter ring to break through the original barriers. Users who own a DIVEVERYDAY Lens Adapter, or who use a device with an M67 threaded mount, will be able to choose lenses they like and switch between them at will, no longer limited by mount specifications.