Lens Converters descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Camera Lens Filter Step Up & Down Ring Adapter For Canon/nikon/sony All Camera. Specifications: For Camera: For Canon Nikon Sony Pentax Special Aviation Aluminium Alloy High Strength, Impact Resistance, Twist and Pressure. Machining Process Surface Treatment: High-mesh Sandblasting Machine and Colour Quality Pure Matte Black or Silver Ultra-low Chemical Residues, Attached to a Solid Font Handling: Font Clear Mission, Silk Screening of Non-mimeo, Attached to a Solid ITEM: 37-49-52-55-58-62-67-72-77-82-77-72-67-62-58-55-52-49-37 . Products number : SOMONO109026