Features: Consists of 5 parts: camera body mount adapter, lens mount adapter, tube 1, tube 2 and tube 3. Adopts high-quality metal material, lightweight, sturdy and tough. 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.