Welcome to our store! 1. This adapter allows the use of cameras with large image sensors (2/3in to 1in), making it very useful for observing details in objects 2. Microscope using CX photo port, including for stereomicroscopes in SM series and microscopes in T490 series 3. Excellent performance: The microscope lens adapter is stable and reliable in performance, making it easy to observe the internal structure of small objects 4. Made from selected high-quality metal and optical glass: The microscope camera adapter is durable and stable for long-term use 5. Microscope tube used for focusing digital microscopes and easy to install. It only needs to be twisted, which is very convenient Product Type: Microscope Tube Material: Alloy, Glass Purpose: Used for microscopes with CX photo port, including for stereomicroscopes in SM series and microscopes in T490 series Camera Sensor Compatibility: 2/3 inch to 1 inch Compatibility: Microscope for SM745T (not V203 or V331) T490 Camera Installation: C-mount Adapter Type: C-mount adapter Camera Connection Size: Approximately 25 mm / 1 inch (C-mount) Microscope Connection Size: Approximately 38 mm / 1.5 inch 1 x lens Your 100% satisfaction is our highest priority. We will provide you with the best service. If you encounter any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best solution!