Features: Cast iron is mainly composed of iron, carbon and silicon alloy composition, with high strength, good toughness, plasticity and machinability. Casting the primary color, the surface frosted, anti-rust treatment, threaded alignment, chassis formation. Can be made bookshelves, drying racks, put objects, retro lighting, and other crafts. Product Usage: floral, lamps, shelves, hanging racks, industrial supplies, and so on Specifications: Name: Flange Type: Axial Type Color: Black Material: Cast Iron Connection Type: Screw Size: 1/2" Inner Diameter: 20mm/0.79" Outer Diameter: 65mm/2.56" Quantity: 1 Pc Note: 1. Transition: 1cm=10mm=0.39inch 2. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you No Retail Package Package Contents: 1 x Flange