Features: The lens adapter is fit secure to the lens, yet can still be removed easily when not need. It can install in between camera body and lens without any tools. No replace or exchange original parts from lens nor camera body. Sophisticated material, high intensity, good operation stability. The adapter is new, top of line quality. Selected from aluminum (camera body mount) anodized black, and brass (lens mount) chromed silver. Brass and aluminum adapter, which will allow you to use for EF lenses mount camera. Specifications: Component:Aluminum Size:Approx.6.50cm/2.56inch Package Includes: 1Pc Lens Adapter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.