This adapter is designed for Canon EF and EF-S series lenses to be used with Canon EOS R series cameras, including the RP, R5, R6, R7, R8, R10, R50, and R100. It supports autofocus, aperture, and shutter speed adjustment, and features dust and moisture seals. The main body of this lens adapter is crafted from alloy material, while the lens and camera side mounts utilize stainless steel for enhanced durability and reliability.