This binding screw is made of , which can withstand use. Features the titanium alloy material, which has high durability, not easy to deform. Fine workmanship, practicality. Features - Color: Blue -Material:Titanium alloy - Size: 1.00X1.00X1.00cm/0.39X0.39X0.39in Diameter: 9.8mm (cap), 4mm (post) - The surface of the binding screw is smooth and flat without burrs, with enough quantity to meet your needs. - Screw posts are suitable for storing and decorating documents, books, scrapbooks, albums, etc., and are good supplies for crafts. - Adopt high-end and titanium alloy material, durable and practical for long time use. - Beautiful appearance and sturdy, durable material. Easy to install and carry, small size and portable. - Characterized by a sturdy and reliable texture, not easy to break, serving you for a long time. Package list: 10 x binding screws