Material: Iron Size: 4.5*8mm/ 0.177 * 0.315 inches Color: bronze Multifunctional use: These double studs, double studs, double studs, claw studs and book studs can be used in children's handmade materials DIY projects for pattern decorative studs. Creative design: These nails come in a variety of shapes, including bipeds, bipeds, bipeds and horn nails, and can help kids create colorful decorative effects. Safety materials: These nails are usually made of safe metal materials with a smooth, prickle face and are suitable for children without worrying about hurting small hands. Variety of sizes: These decorative nails come in a variety of sizes and can be selected according to the needs of the DIY project. Children's puzzle: By using these decorative nails to do DIY activities, you can exercise children's hands-on ability and creativity, is a beneficial children's puzzle activity.