Features:_x000D__x000D_This item is a 0.5x C-mount adapter to connect CCD camera or digital eyepiece to microscope. _x000D_This item has two adapters: 23.2 turn to 30mm and 23.2 turn to 30.5mm. _x000D_Effects: compact with the lens tube, so that the depth of insertion can be easily controlled. _x000D_Lens blue anti-reflective coating, increase transmittance. _x000D_It 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. _x000D__x000D_Specification:_x000D_Material: Metal_x000D_Weight: 142g/5oz_x000D_Color: Black_x000D_Model: kp-05x_x000D_Interface: C-mount_x000D_Interface Size: 23.2 turn 30mm; 23.2mm turn 30.5mm (as pictures shown)_x000D__x000D_Package List:_x000D__x000D_1 x 0.5X C-Mount Lens Adapter_x000D_1 x Ring Adapter 30mm_x000D_1 x Ring Adapter 30.5mm_x000D__x000D__x000D_Note:_x000D_1. Please allow slight error due to manual measurement. Thanks for your understanding._x000D_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. 1This item is a 0.5x C-mount adapter to connect CCD camera or digital eyepiece to microscope. 2This item has two adapters: 23.2 turn to 30mm and 23.2 turn to 30.5mm. 3Effects: compact with the lens tube, so that the depth of insertion can be easily controlled. 4Lens blue anti-reflective coating, increase transmittance. 5It 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.