YIXISI 100 Set Chicago Binding Screws Assorted Kit, 4 Sizes Metal Round Cross Head Book Binding Screws & Posts, With Screwdriver, for DIY Leather Decoration Bookbinding, M5 5/8/10/12 mm, Silver

• Package including: 100 sets of screw posts, 100 pcs chicago binding screws with 4 sizes. Includes screwdriver and nylon spacer.
• High Quality: It is made of metal, it is sturdy, durable for a long time and can be used repeatedly.
• In a Storage Box: Chicago screws kit is packed by a clear storage box, which is partition put according to their sizes, easy to get your wanted size and convenient to carry.
• Easy to Use: Practical combination of screw kit . As long as your book or leathhas holes with a diameter of 5mm or less, you can use them for binding. You only need to install two parts from both sides to achieve the binding effect!
• Wide Application: especially suit for leather handicrafts decoration, bookbinding, document, book, album, DIY crafts, etc.

Specification: Color: Silver. Material: Metal Package include: 25pcs × M5 * 5mm; 25pcs × M5 * 8mm; 25pcs × M5 * 10mm; 25pcs × M5 * 12mm; 100pcs × M4 * 4mm Screw; 100pcs × Plastic Gaskets; 1pcs × Screwdriver; 1pcs × Plastic Box. Warm Tips: 1. For a tight fit, your hole should be equal to or slightly smaller than the pin diameter of 5mm. 2. Small parts, please keep away from the child. 3. Manual measurement, please allow tiny reasonable error.