Thank you for viewing! TELECONVERTER 2× for NIKON AI This is a TAMRON SP BBAR MC TELECONVERTER 2X. It is a teleconverter compatible with Tamron Adaptall 2 mount lenses. For those who are wondering what a teleconverter is, it's a piece of equipment that you put between the lens and the camera body to take close-up photos. Condition: Working properly Optics: In beautiful condition. No mold. No scratches. Some dust present. Included items: All items shown in the photos. I will sell it to someone who needs it. (^ ^ゞ