Feature These screw posts are easy to use for binding and removing. Use a drill to create a 5 mm diameter hole, then install the two parts from opposite sides. Made of carbon steel and brass, these screw posts are sturdy and durable, with a nickel-plated surface. They provide enhanced corrosion resistance and an attractive decorative finish. Ideal for leather crafts, document decoration, bookbinding, photo albums, scrapbooking, and various DIY projects. Warm Tips: Different leather thicknesses require different screw lengths. 4 mm screws are suitable for 46 mm thick leather. 6 mm screws are suitable for 68 mm thick leather. 8 mm screws are suitable for 810 mm thick leather. Please confirm the appropriate size before ordering. Material: Carbon steel and brass Color: Silver, Gold Assorted sizes: All screw posts have a 5 mm (3/16 inch) diameter, with three length options: 4 mm (0.16 inch), 6 mm (0.24 inch), and 8 mm (0.3 inch) Quantity: 10 pairs per set Note: 1 cm = 10 mm = 0.39 inch Allow 03 cm variation due to manual measurement. Please ensure this is acceptable before purchase. Due to differences in monitor displays, actual item color may vary slightly from the image. Thank you. Package includes: 10 pairs x Belt Buttons