Plumbing Flanges descriptions We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Flange Antique Durable Tool. Features: These Antique Wall Flanges Are Made of Cast Iron, These Flanges Have High Strength, Great Toughness and Durability. The Design Will Ensure Its Practicability and High Performance in the Work. These Cast Iron Floor Flanges Are Perfect for Making Industrial Style Furniture Such As Shelving, Curtain Rails, Frames, Hangers Etc. There Are There Types for Choosing, Like DN15, DN20, DN25. There Are Total 10 Pieces of Flanges in One Set That You May Use for Many Projects. Specifications: Material: Cast Iron Color: Black Types: DN15, DN20, DN25 Thickness: About 5mm Outer Diameter: DN15: About 65mm DN20: About 70mm DN25: About 75mm Inner Diameter: DN15: About 20mm DN20: About 25mm DN25: About 32mm Suitable Pipe: DN15: Fit 1/2" DN20: Fit 3/4 " DN25: Fit 1" Package Included: 10pcs/set X Flanges. Products number : SOMONO153505