1Main Application: 0.5X electronic eyepiece is used to connect industrial cameras and microscopes. One end is the camera C interface, and the other end is the 22 microscope eyepiece interface. 20.5 Times Magnification: 0.5x magnification significantly improves the image field of the microscope camera. 3Adapter Ring and Rubber Ring: Equipped with 30mm, 30.5mm adapter ring for stereo microscope. The interface has a non slip rubber ring. 4Good Effect: Compact with the lens barrel, so that the insertion depth can be easily controlled, closely fit the original hole position with accurate size. 5Good Workmanship: Exquisite workmanship, beautiful appearance design, small and portable size, providing you great using experience.1 x Electronic Eyepiece2 x Adapter Ring