★90 sets of 6 sizes: Chicago rivet stud set includes 6 sizes (M5*4mm, M5*5mm, M5*6mm, M5*8mm, M5*10mm, M5*12mm), 15 sets of each size. And with 3 different lengths of screw（M4*3mm,M4*4mm,M4*5mm) . You can combine them freely. It is suggested that the column sizes of M5*10 and M5*12 should be matched with M4*5 screws, so as to be more secure. Various lengths are available to meet your different needs.
★High demand: leather rivets strong and durable, easy to bind, excellent finish, good screw head chamfering, low profile slot, professional appearance, easy to disassemble and install, is your only choice.
★High-quality material: These Chicago screws are made of high-quality carbon steel, advanced nickel plating, and a stable and dense oxide film on the surface, don't come loose which is durable and anti-rust.
★Widely used:These leathercraft rivets are especially suitable for all kinds of leather crafts, such as belts, handbags, leather shoes, binding documents, books, photo albums, DIY crafts and so on. You can mix it up and use your imagination.
★Reusable storage boxes: All the leather screws packed in a delicate and transparent box. The book screws are arranged according to size, you can easily store and find the size you need.