Features Advanced Material: The C-mount lens adapter is made of high-quality metal material, which is not easy to corrode and rust, and has good durability and stability. Exquisite Workmanship: The CCD camera interface adapter adopts professional craftsmanship, exquisite workmanship, stable and reliable performance, and is easy to observe the internal structure of small objects. Simple Installation: The C-type installation method is adopted, which is easy to install and replace, and can be directly replaced without complicated tools. It is very suitable for biological microscopes with an outer diameter of 23.2mm. Package Contents: The biological microscope adapter set includes adapters and 30mm, 30.5mm adapter rings, with complete accessories and strong practicability. Compact: The Stereo Microscope Multi Adapter is compact with the lens barrel, so the insertion depth can be easily controlled and the service life is long. Specification: Condition: Brand New Item Type: Microscope Adapter  Material: Metal Applicable Biological Microscope Outer Diameter: Approx. 23.2mm / 0.9in  Adapter Ring Diameter: Approx. 30mm / 1.18in, 30.5mm / 1.2in Package List: 1 x Microscope Camera C-Mount Adapter 1 x 30mm Adapter Ring 1 x 30.5mm Adapter Ring Note: 1. Please allow 0-2 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List 1 x Microscope Camera C-Mount Adapter 1 x 30mm Adapter Ring 1 x 30.5mm Adapter Ring