Description: Microscope adapter ring from 23.2 to 30mm tube for electronic eyepiece. Used to transfer a 0.5X standard adapter to a body or a larger microscope adapter. With a high quality sealing rubber strip for a stronger connection. Suitable for stereo microscope and biological microscope. Made of metal, durable in use. Specification: Material: Metal Diameter: 30mm/1.18inch Package Includes: 1 Piece 23.2mm to 30mm Adapter Ring Note: Please allow a slightly errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understanding and attention