Tarnish Resistant 304 Stainless Steel Spring Ring Clasps, Manual Polishing, Necklace Design Materials, Stainless Steel Color

Size: about 5mm in diameter, hole: 1mm.

Double Sided Manual Polishing: These clasps are hand-polished, which means that the front and back of the clasps are manually put on the polishing wheel to friction, making it more shiny and smoother.