Dimensions : 3mm dia. (closed) Metal type : Copper Jewelry Type : Crimp beads & bead covers This is a 3MM diameter (closed) Copper open crimp bead cover with a smooth finish. It is designed to create a more finished look for crimp beads. Close around the crimped bead with crimping pliers to give a metallic look at an affordable price. *Copper crimps show tarnish on the pictures because it’s zoomed in but can’t see with your bare eyes*