Tarnish Resistant 304 Stainless Steel Chain Extender, Cadmium Free & Nickel Free & Lead Free, with Teardrop and Lobster Claw Clasps, Stainless Steel ColorSize: about 50mm long, lobster: 10x6.5x3mm, teardrop: 6x3mm, jump ring: 4x1mm, 2.5mm inner diameter.