0.5X C-Mount + 30mm 30.5mm Adapter Ring Electronic Eyepiece CCD Camera Video For
0.5X reduction Lens, eyepiece lens 23.2mm connector. Include two adapters from 23.2mm to 30mm and 30.5mm. 1 Piece 23.2mm to 30mm Adapter Ring. 1 Piece 23.2mm to 30.5mm Adapter Ring. It's just take you 1 minute.