Features: Adopts high quality plastic material, lightweight, sturdy 3 rings make 7 different combinations, which extends the lens focal length for close-up shot, and won't alter the optical quality to ensure there is no glare in image Provides images with better quality than close-up filter, a good substitution to expensive macro lenses for macro photography Electronic contacts keep the light metering and auto focusing function of camera Fits tightly onto camera EF mounts Good accessory for photography lovers Specification:Material: Plastic Color: BlackMount: EFLens Ring Type: 13mm andamp 21mm andamp 31mmMagnification: 0.24 - 1.47 timesFocusing Range: 4.2 - 21cm or 1.65 - 8.26inch Manual Focusing Length Range: 0.53 - 5cm or 0.12 - 1.97inchSuitable for cameraswith EF mountWeight: Approx. 145gPackageList: 1 x LensAdapter Rings Set2 x LensCaps1 x Storage Bag.Note:This product is only suitable for DSLR cameras, and the entry series of zoom lenses within 70MM, not suitable for mirrorless camera, prime lens.