Stock up on an essential jewelry supply when you buy these 4mm antique copper 20 gauge open jump rings. This small jump ring features an antique finish over copper for a warm shine with darker tones. This jump ring would work well in designs featuring other copper components. Their 4mm size makes these jump rings versatile supplies you can use in a variety of designs. Use them to attach charms to bracelets, finish a jewelry strand or to attach dangles of beads to designs. There are so many design possibilities with these helpful components.