Crafters and leather workers, this Ironking Chicago screw assortment is exactly what you need for professional-looking projects! You get 100 complete sets in six different sizes from M5*4mm to M5*10mm, covering pretty much any material thickness you'll encounter. The bronze color has that classic, professional look that works beautifully with leather, wood, and other crafting materials. What's really handy is how these work - the two-piece design (post and screw) creates a secure, adjustable connection that's both functional and attractive. The metal construction is durable with a smooth, burr-free finish that won't snag or damage your materials. They're waterproof and have excellent hardness, so they'll hold up well over time. Installation is straightforward with the included Phillips screwdriver and hole punch - just punch your hole, select the right size, and tighten. The clear storage box keeps everything organized by size, so you can quickly find what you need for each project. These are perfect for leather crafts, bookbinding, bag making, belt repair, shoe work, and countless other DIY projects. The quality is impressive - these aren't cheap, poorly-made fasteners but professional-grade components that will make your projects look store-bought. Whether you're a serious crafter or just need reliable fasteners for repairs, this comprehensive set delivers incredible value and quality. You'll wonder how you managed without having all these sizes readily available!