Brand new and high quality, special u shape design and unique structure, a popular item, direction for use: simply insert to hold a bun or juda for beautiful hair styles.You can do a bun or another type of up do very easily. These pins are black in color so they are perfect for people with dark hair. They are made from black iron and have a small smooth bead on the end so it doesn't poke or scratch your scalp. Each pin measures 4.5 cm.