All explanations are by AI. m(_ _)m This item was passed down from my sibling, so I don't know the details. I haven't confirmed its operation. Please purchase only if you understand! Bundle sales are also possible, so I'm waiting for requests! This is a MINOLTA 2x teleconverter that provides excellent image quality. Please check the condition of the product in the photos. Please purchase after you are satisfied. If you are looking for perfection or are very particular, please refrain from purchasing. - Brand: MINOLTA - Model: AF 2x TELE CONVERTER-II APO - Country of Manufacture: JAPAN This is the Minolta AF 2x Teleconverter II APO. It's a teleconverter that doubles the focal length. It is compatible with the Minolta AF lens system. Thank you for viewing.