1This adapter allows the use of cameras with large image sensors (2/3in to 1in), which is very helpful for observing the details of items. 2Microscopes that use the CX photo port, including for SM series stereo microscopes and for T490 series microscopes. 3Exquisite workman, the microscope lens adapter is stable and reliable in performance, easy to observe the internal structure of small objects. 4Made of selected high quality metal and optical glass, the microscope camera adapter is durable and stable, and can be used for a long time. 5The microscope tube is used for focusing of digital microscopes and is easy to install. It only needs to be tightened, which is very convenient. Item Type: Microscope Tube Material: Alloy, Glass Purpose: Used for microscopes that use the CX photo port, including forSM series stereo microscopes and for T490 series microscopes Camera Sensor Compatibility: 2/3 inch to 1inch Compatibility: Microscope for SM745T (not V203 or V331) T490 Camera Installation: C Mount Adapter Type: C Mount Adapter Camera Connection Size: Approx. 25mm / 1.0in (C Mount) Microscope Connection Size: Approx. 38mm / 1.5in 1 x LensThe lens is fragile, pay attention to bumps