Description Made with aircraft-grade aluminum alloy, offering high durability, impact resistance, twist strength, and pressure resistance. Long-lasting and suitable for repeated use. With sandblasting surface treatment process to create a matte structure and quality, sweat-proof and dirt-proof. Allows you to screw telephoto lenses onto wide-angle lenses. Perfect camera accessories for close-up photography. Includes 18 sets of filter ring adapters in various sizes: 37-49-52-55-58-62-67-72-77-82mm. Use these step-up/down rings to take better photos. Features - Made with aircraft-grade aluminum alloy, offering high durability, impact resistance, twist strength, and pressure resistance. - With sandblasting surface treatment process to create a matte structure and quality, sweat-proof and dirt-proof. - Allows you to screw telephoto lenses onto wide-angle lenses. Perfect camera accessories for close-up photography. - Includes 18 filter ring adapters in different sizes: 37-49-52-55-58-62-67-72-77-82mm. Use these step-up/down rings to take better photos. - Lightweight and portable, easy to install, and can also improve issues with partial vignetting. - Suitable for Canon, Nikon, Sony, and other DSLR cameras. Packaging includes 1 x 37mm-49mm Step-up ring 1 x 49mm-52mm Step-up ring 1 x 52mm-55mm Step-up ring 1 x 55mm-58mm Step-up ring 1 x 58mm-62mm Step-up ring 1 x 62mm-67mm Step-up ring 1 x 67mm-72mm Step-up ring 1 x 72mm-77mm Step-up ring 1 x 77mm-82mm Step-up ring 1 x 49mm-37mm Step-down ring 1 x 52mm-49mm Step-down ring 1 x 55mm-52mm Step-down ring 1 x 58mm-55mm Step-down ring 1 x 62mm-58mm Step-down ring 1 x 67mm-62mm Step-down ring 1 x 72mm-67mm Step-down ring 1 x 77mm-72mm Step-down ring 1 x 82mm-77mm Step-down ring