Crafted from high-quality carbon steel, these Chicago screws boast a bright surface, wear resistance, oxidation resistance, and a long lifespan. The kit includes sizes 5X6mm, 5X8mm, 5X10mm, 5X12mm, and 5X15mm, with 20 pieces of each size, totaling 100 sets. Featuring an exquisite appearance and a smooth surface, these leathe rivets are convenient to install and use. They employ a locking mechanism that allows for reusability, and they can be easily installed or removed using a standard screwdriver. These Chicago screws are perfect for riveting photo albums, ledgers, books, leather crafts, and DIY projects., Manufacturer: DDHOMIN