Features: Premium Aviation-Grade Aluminum Alloy Construction: Crafted from high-grade aviation aluminum alloy, these filter adapters boast unparalleled strength, resilience against impacts, twists, and pressure, ensuring durability and longevity for years of reliable use. Ultra-Lightweight and Portable Design: Despite their robust build, these adapters are engineered to be lightweight and compact, making them the ideal travel companion for photographers on the go. Their sleek profile minimizes bulk and simplifies storage. Precision CNC Machining for Seamless Fit: Utilizing state-of-the-art CNC technology, each adapter is meticulously crafted to ensure a perfectly smooth and snag-free threading experience. The rigorous tool replacement policy during manufacturing ensures unparalleled precision and quality. Eco-Friendly and Durable Surface Treatment: A combination of high-grade sandblasting and eco-friendly anodized oxidation creates a premium matte finish that is not only visually appealing but also resistant to sweat and dirt, ensuring your adapters look great and perform flawlessly. Versatile Size Compatibility: This comprehensive 18pcs set covers a wide range of filter sizes from 37mm to 82mm, including both step-up and step-down rings. This versatility allows for seamless integration with various lenses and filters, enabling you to capture stunning images under different shooting conditions. Universal Compatibility and Enhanced Image Quality: For Canon, for Nikon, for compatible with Sony, and other DSLR cameras, these adapters provide a versatile solution for expanding your photography capabilities. They enable the use of wider-angle lenses on telephoto setups, enhancing creativity and improving image quality by reducing vignetting issues. With these adapters, you can unleash your full photographic potential. Specifications: Material: Aluminum Alloy Size: As pictures show Quantity: 18pcs Package Included: 1x 37mm-49mm Step-up ring 1x 49mm-52mm Step-up ring 1x 52mm-55mm Step-up ring 1x 55mm-58mm Step-up ring 1x 58MM-62mm Step-up ring 1x 62mm-67mm Step-up ring 1x 67mm-72mm Step-up ring 1x 72mm-77mm Step-up ring 1x 77mm-82mm Step-up ring 1x 49mm-37mm Step-down ring 1x 52mm-49mm Step-down ring 1x 55mm-52mm Step-down ring 1x 58mm-55mm Step-down ring 1x 62mm-58mm Step-down ring 1x 67mm-62mm Step-down ring 1x 72mm-67mm Step-down ring 1x 77mm-72mm Step-down ring 1x 82mm-77mm Step-down ring