Size -- 1/2" BSP; Diameter: 65mm; Center Hole Diameter: 20mm with 3 holes for bolts, the flange can satisfy any home decoration, including various designs Materials -- Industrial Malleable Iron Floor Threaded Flange is made of iron, carbon silicon alloy composition, high strength, anti-rust treatment, plasticity and machinability Thread - - Pipe Thread.National Pipe Taper (NPT) Thread.Apply to most iron pipes;Floor flanges are common to use for plumbing.They are used to connect pipes on your floor or wall Structure -- The frosted surface, anti-rust treatment, threaded alignment, chassis forming 1/2 inch black floor pipe fittings can be used to make shelves, pipe furniture, drying racks, bookshelves, retro lighting, and any industrial craft decor The Flange black malleable iron threaded floor pan is a great choice for all your needs. Great for industrial pipe furniture, DIY decoration projects Specification Color:Black Materials: Cast Iron Method of Connection: Screw Size: 1/2" Inner Diameter: 1.8cm Type: Axial Type Product Usage : floral, lamps, shelves, hanging shelves, industrial supplies, etc Feature The bottom of the unique reinforced design, preventing deformation , good stability. Cast iron is mainly composed of iron, carbon and silicon alloys, high strength, good toughness, plasticity and processability. Fusion from the primary color, frosted surface, anti-rust treatment, thread alignment and chassis formation. Can be made shelves, drying racks, put objects, retro -lighting and other crafts. Be used to make connections to black iron pipe, and you can paint black paint on the surface. Note: Due to manual measurement, there may be a certain error. Package Content 10 x Floor Flange 1/2