Features:1. Rings with different lengths of 10mm and 16mm can used alone or in combination to get the desired magnification.2. With electronic contact, support automatic focusing, automatic exposure, etc.3. Metal mount, fine workmanship, high precision, wear-resistant and durable, and will not damage the lens and camera.4. It can match the TTL metering and AE mode of the camera body.5. The close-up ring is only suitable for macro shooting, so it can only be focused in close-up, and it is normal that the distance can not be focused when it is installed.6. Suitable for Samsung NX mount camera.Specification:Condition: 100% Brand NewItem Type: Macro Lens Adapter Material: Aluminium Alloy + ABSColor: As Pictures ShownAutomatic Focusing: YesFitness: for Samsung NX Mount CameraTube Length: 10mm+16mmWeight: Approx. 74gSize: Approx. 7.2x7.2x5.2cm/2.8x2.8x2.0inch(Package)Package List: 1 x Lens Adapter