Feature 1 Adopts high quality metal materials, lightweight, sturdy and durable. With a 1/4inch screw hole for mounting on tripod. 2 Can decreases the lens focal length for close-up shot and won't alter the image quality. 3 3 rings/set, 13mm, 20mm, 36mm, can be used independently or in combination to get different magnification. 4 Fits tightly onto cameras, copper conducts inside support auto focusing and auto exposure. 5 Good accessory for photography lovers, a good substitution to expensive macro lens for macro photography.Features: Adopts high quality metal materials, lightweight, sturdy and durable. With a 1/4inch screw hole for mounting on tripod. Can decreases the lens focal length for close-up shot and won't alter the image quality. 3 rings/set, 13mm, 20mm, 36mm, can be used independently or in combination to get different magnification. Fits tightly onto cameras, copper conducts inside support auto focusing and auto exposure. Good accessory for photography lovers, a good substitution to expensive macro lens for macro photography. Specification: Material: ABS+Metal Color: Black Magnification: Adjustable (13mm&20mm&36mm) Suitable for Canon EOS EF/EF-S Lens Package List: 1 x Lens Adapter Rings Set 1 x Front Cover 1 x Rear Cover