Made from carbon steel material, anti-rust, easy to bind, install and remove, can use repeatedly, with good tightness to serve you well. These screws with stable and sturdy structure, can be especially suit for leather handicrafts decoration, bookbinding, document, book, album, DIY crafts, and so on. Features - Color: silver. - Material: carbon steel. - Size: 0.90X0.50X0.40cm/ 0.35X0.20X0.16inch. - Specification: M4x4, M4x5, M5x5, M5x6, M5x8, M5x10, M5x12, M5x15, M5x18. - Proper for all kinds of simple leather craft, such as belt, handbag, shoes, clothes, to fit your needs. - Easy to install and carry with the small size, different specifications can fit your various needs. - Carbon steel materials, hard, sturdy and , not easy to get rust and erosion, providing . - The screw post is suitable for holding and decorating document, book, scrapbooking, photo album, and so on. - Threaded post lets you open and re-attach piece where needed, save your time and efforts. Package list: 85 x screws(M4x4) 30 x screws(M4x5) 25 x screws(M5x5) 20 x screws(M5x6) 20 x screws(M5x8) 10 x screws(M5x10) 10 x screws(M5x12) 10 x screws(M5x15) 10 x screws(M5x18)