Description: These binding screws are made of durable copper and iron. Precision craftsmanship ensures reliable performance. The deep-thread design enhances grip and prevents slipping during installation, providing strong and secure tightening. Features: - Color: Silver - Material: Copper, iron - Size: 0.90 x 0.90 x 0.75 cm / 0.35 x 0.35 x 0.29 in - Made of copper and iron for durability and corrosion resistance - Chamfered head design improves safety and usability - Deep threads reduce slippage during rotation - Smooth finish with precisely machined slots and chamfered heads - Professional appearance with easy installation and removal - Flat-head design suitable for belts, bags, clothing, handbags, stationery, photo albums, and calendars Packaging includes: 15 flat-head leather rivets