Fitment: Universal for cameras with compatible lens threads Transform caliber adapter ring can be installed in front of the lens to allow different diameter lenses to share the same filter, lens hood, or other accessories, effectively increasing the lens diameter Durable construction with small-diameter outer thread (lens connection end) and large-diameter internal thread for attaching various filters such as UV, CPL, starlight, ND, close-up lenses, hoods, and more Lightweight and portable design; easy to install and helps save money by enabling filter sharing across multiple lenses This ring serves as a step-up adapter from smaller to larger thread sizes Color: Black Material: Aluminum alloy Sizes: 37mm to 49mm, 49mm to 52mm, 52mm to 55mm, 55mm to 58mm, 58mm to 62mm, 62mm to 67mm, 67mm to 72mm, 72mm to 77mm, 77mm to 82mm, 82mm to 77mm, 77mm to 72mm, 72mm to 67mm, 67mm to 62mm, 62mm to 58mm, 58mm to 55mm, 55mm to 52mm, 52mm to 49mm, 49mm to 37mm Package Contents: 18 x Lens Filter Adapter Ring Note: Light and display differences may cause slight variations in color between the image and actual item. Measurement allows an error of +/- 1-3cm