This is an adapter made by RAYQUAL for using CONTAX/YASHICA mount lenses on Canon EOS mount cameras. It's made in Japan with high precision and worked without any problems, but I'm selling it because I no longer use it. Although not pictured, I will also include a lens cap for the EOS camera side. - Brand: RAYQUAL - Model: CO/Y-EOS - Made in: Japan Thank you for looking.