Description:Reliable Material: These crimp tubes for jewelry making are made of copper for excellent durability and stability, and are not prone to rust, deformation, or discoloration after long-term use.Beautiful and Practical: Stack multiple tube crimp beads together in a jewelry diy project, which not only prevents large beads from moving around but also enhances the beauty of the jewelry design. They can also be attached to glass beads, wooden beads, spacer beads, and other charm; in addition, they can be used as knots at the end of bracelets to prevent beads from falling off or coming apart.Easy to Use: Without complicated tools or techniques, simply string curved noodle beads and other beads at varying spacing onto the leather cord, waxed wire, or ribbon and add a pretty pendant.