TierraCast® brass anodized French hook niobium ear wires. 20 gauge, approx. 3mm loop. These earring hooks are lead free, nickel free, cadmium free, and meet the EU Nickel Directive. Findings made with niobium don't flake or chip like plated or painted surfaces can. Safe for nearly everyone with metal allergies. These do not include a bead or coil.