Olympus M.ZUIKO DIGITAL 2x Teleconverter MC-20 This is a 2x teleconverter. I used it with a 40-150 f2.8 lens. I'm selling it because I rarely used it, only once or twice a year. - Brand: OLYMPUS - Model Name: M.ZUIKO DIGITAL 2x Teleconverter MC-20 - Included items: Case, instruction manual, carabiner - Purchased from: Olympus Online (purchased in October 2020) - Reference: https://jp.omsystem.com/product/lens/mc20/index.html Operation confirmed on July 27, 2025. Thank you for looking. It has been stored at home (in a dehumidified storage), so please understand. Operation has been confirmed, and as it is precision equipment, returns are not accepted. I can add more photos if needed, so please let me know in the comments.