You'll love using the 6mm matte black-plated 21 gauge open jump ring in your designs. This jump ring features a thin gauge and a versatile size. It is best suited for use in delicate designs. You can use it to add small charms or clasps to designs. Link several of these jump rings together to create a cool chain mail look. Jump rings are the building blocks of jewelry designs, so make sure you always have some on hand. This jump ring features a solid shade of black with a soft matte finish.