Features: Brand new and high quality Achieve professional bookbinding with our binding screws. Perfect for DIY scrapbooks and crafts. Smooth and practical, our button screws simple install. Great for leather crafts and projects. Craft and DIY enthusiasts will appreciate the versatilities of our screws. Suitable for various applications like saddles and purses. Our screws reliable and can be used in luggage, shoe and handbags. Creative with your designs use these rivets. Stay organizes with our convenient screw set. Different size included for all your crafting needs. Specifications: Material: metal Package Includes: You will receive 50pcs m4x4mm, 30pcs m4x5mm, 20pcs φ5x6mm, 15pcs φ5x8mm, 15pcs φ5x10mm, 15pcs φ5x12mm, 15pcs φ5x15mm, including 80pcs of screws and 80pcs of nut, a total of 160pcs. Package Includes: 160pcs Chicago Screws note: Please allow 1 to 3cm error due to manual measurement, please make sure you not mind before your bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.