This lot includes several teleconverters, including 2x Nikon-AI Canon C/FD Pentax and Minolta MD adapters. These converters are designed to allow you to easily adapt your lenses to different cameras without having to worry about compatibility issues.  The mounts are designed for various cameras, including Canon, Konica Minolta, Minolta, Pentax, and Nikon. This lot is perfect for photographers who want to expand their collection and achieve their photography goals with ease.