Size and color: about 6mm inner diameter, 10mm outer diameter, 4mm length. There are 4 beautiful colors (gold, silver, bronze, black). Each color has 100 sets. Easy to use: First, cut a hole with the hole punch and the appropriate chuck. Then take the grommet kit and other tools to fasten the grommet kit well. Wide Use: These grommets are used to reinforce holes to prevent tearing fabrics, tarpaulins, canvas, vinyl , leather and fabric. Perfect for leather, garments, handbags, curtains, repair or decoration. Premium Material: The eyelet clips are made of premium cupro nickel and surface coating galvanized. With high corrosion resistance, they are very stainless. Package includes: eyelet kit including puncher, matching mandrel and 400 eyelets (each kit contains 1 eyelet and 1 washer) and a storage box for small sockets. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it