Features: This item is a 0.5x C-mount adapter to connect CCD camera or digital eyepiece to microscope. This item has two adapters: 23.2 turn to 30mm and 23.2 turn to 30.5mm. Effects: compact with the lens tube, so that the depth of insertion can be easily controlled. Lens blue anti-reflective coating, increase transmittance. 0.5X microscope camera dedicated interface can be used in all eyepiece position with 23.2mm or 30mm or 30.5mm, 0.5x magnification to get a more wide of view. Specification: Material: Metal Weight: 142g/5oz Color: Black Model: kp-05x Interface: C-mount Interface Size: 23.2 turn 30mm; 23.2mm turn 30.5mm (as pictures shown) Package List: 1 x 0.5X C-Mount Lens Adapter 1 x Ring Adapter 30mm 1 x Ring Adapter 30.5mm Note: 1. Please allow slight 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. 0.5x C interface adapter: Microscope eyepiece is a 0.5x C interface adapter, used to connect a CCD camera or digital eyepiece to the microscope, it can also be used for microscope photography, video Two size adapter rings: 0.5X microscope camera dedicated interface There are two sizes of adapter rings, 23.2 to 30 mm and 23.2 to 30.5 mm, so they can be used in microscopes of 23.2, 30, and 30.5 mm. superior Increase light transmittance: 0.5X microscope camera dedicated interface adopts C-mount interface, 0.5x magnification to obtain a wider field of view. The blue anti-reflection coating of the lens can increase the light transmittance. Metal material: The microscope eyepiece is 100% brand new and made of metal material. The weight is 142g/5oz. The material is thick and lightweight. Compact with the lens barrel, the insertion depth can be easily controlled. Application: 0.5X anti-reflective lens adapter can be used on microscopes with 3 diameters of 23.2mm, 30mm or 30.5mm, directly plugged into biological, stereo, and gold eyepieces to take pictures, or it can be connected to TV tube