1、Zinc Alloy Material: These round button studs are made of sturdy and premium zinc alloy material with high toughness, which is strong and highly durable. 2、Easy Operation: These chicago screws are easy to use, screw the stud backwards, insert it into the pre drilled hole, and tighten it with a simple screwdriver for easy fastening. 3、Multi Purpose: These round head button studs are perfect for belts, leather bags, handbags, shoes, clothes, leather and DIY projects. 4、7 Pieces: 7 pieces of round head button studs are packed together, which could meet your different needs for DIY, giving full play to your imagination and creativity. 5、Simple and Cool: These screw rivets feature glossy appearance and simple design, you can use them to decorate your clothes and show off your personality. 7 x Round Button Studs Item Type: Round Button StudsMaterial: Zinc AlloyApplication: Perfect for Decorating DIY Bags, Leather Bracelets, Belts, Clothes, Shoes, EtcProduct Size: Approx. 10 x 8mm / 0.4 x 0.3in ( Manual Measurement, Slight Error May Exist )