Assorted Sizes: Kits include pyramid studs in sizes 4mm (5/32 inch) x 500, 5mm (13/64 inch) x 300, 6mm (15/64 inch) x 200, 8mm (5/16 inch) x 100, 10mm (3/8 inch) x 80, and 12mm (15/32 inch) x 40. Available in a variety of sizes, perfect for DIY bags, boots, jackets, belts, pet collars, leather crafts, and more - one set meets all your needs Premium Materials: These metal studs for clothing are made of high-quality stainless steel with a smooth , fine workmanship, and durability. The included awl has a steel tip with strong penetrating power and a wooden handle that provides a comfortable grip, making the punching process easy and precise Easy to Use: These punk rivets easily penetrate thin materials. Simply poke a hole in leather or denim fabric with the awl, press the rivet into place, and press the tip of the rivet with the wooden handle to secure it. Caution: The awl and rivet tips are , use with caution Four-jaw Square Studs Kit: Includes 1220pcs silver pyramid studs in various sizes, 1pc practical awl gadget to make holes if material too thick for rivet prongs to penetrate directly, 1pc slotted screwdriver to fold the 4 prongs over on the back-side Versatile Use: These 4-prong square rivets are suitable for various styles, including punk, rock, and gothic. They are perfect for decorating your jackets, jeans, belts, bags, shoes, hats, , and leather crafting DIY projects, instantly transforming simple accessories into eye-catching personalized pieces for a look, Weight: 0.50926782522 Pounds, Manufacturer: Ehwisbe