Features: Adopts high quality metal material, lightweight, sturdy and durable. 3 rings make various 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. Fits tightly onto cameras, and only supports manual operation of focus and exposure. Good accessory for photography lovers. Specification: Material: Metal Color: Black Lens Ring Type: 9mm & 16mm & 30mm Magnification: Adjustable Suitable for Sony A DSLR and Minalta MA Lens Inner Diameter: Approx. 60mm / 2.36in Total Height: Approx. 79mm / 3.11in Weight: Approx. 123g Package List: 1 x Lens Adapter Rings Set 1、Adopts high quality metal material, lightweight, sturdy and durable 2、3 rings make various 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 3、Provides images with better quality than close-up filter, a good substitution to expensive macro lenses for macro photography 4、Fits tightly onto cameras, and only supports manual operation of focus and exposure 5、Good accessory for photography lovers