Designed for USB Camera: This M12 lens kit is designed for USB cameras (Arducam SKU: B0203/B0198/B0205/B0200/B0201/B0202/B020201/UB020202/B0261). It includes 10 M12 lenses, 4 lens holders, 1 locking ring, 1 cleaning cloth, and 1 pack of screws. All in One: Shrink telephoto lens, fisheye lens, wide-angle lenses, and macro lenses all into a complete toolbox on your palm, which allows you to select and change the best lens for close-up macro photography or a wider field of view. High compatibility: The Horizontal Field of View (HFOV) of those lenses ranges from 20 to over 180 degrees, covering any angles of view you need. And each lens is compatible for 1/2.7”, 1/2.8”, 1/2.9” sensor format, you can get superior image quality without dark corners and distortion on your USB camera. Portable: Come with four lens holders which hole spacing is 18mm and 20mm, it is convenient for you to take and replaced with the included lens. Applications: Combined with a USB camera, these lenses are highly recommended for the video surveillance system, live streaming, videoconference, dashcam, and other vision applications. In order to meet the increasing market demands for more lens options to address different use cases, Arducam selected and tested a wide range of M12 mount optimal lenses from long focus to fisheye for shooting on your USB cameras. It’s now much easier for you to get the best lens you’ll need, and we will keep the lens list growing in the near future.