This WHYHKJ eyelet set is absolutely perfect for anyone who does crafts, leatherwork, or clothing alterations! You get 450 pieces in mixed colors, which is more than enough for multiple projects. The eyelets have a 3mm inner diameter and 6mm outer diameter, with a height of about 4mm - a great versatile size that works for many applications. They're made from high-quality metal that's sturdy and won't easily deform or break. The surface has a high-temperature baked paint finish that's bright, smooth, and colorfast, so they won't fade over time. Installation is straightforward - you just need pliers or an eyelet tool to set them quickly and easily. I've used these for everything from reinforcing holes in belts and hats to decorative purposes on jeans, bags, and even scrapbooking projects. The mixed colors are fun and give you options to match different materials and designs. They're also great for shoelaces, clothing reinforcements, and textile crafts. The quality is impressive for the price - much better than some other craft eyelets I've tried that tend to rust or lose their finish. Whether you're a professional crafter or just enjoy DIY projects, having a large assortment like this on hand is super convenient. Definitely recommend if you need reliable, good-looking eyelets that won't let you down mid-project!