Secure bracelets, necklaces, or other jewelry and crafts with the Locking Magnetic Clasps. The simple locking system allows you to easily put on jewelry with one hand and has a strong hold, so you don't have to worry about it falling off. They work best with leather cord with a diameter smaller than 4 millimeters, but it can work with other small cording as well. These clasps come in a variety of metallic solid colors and multiple pack sizes!