Tarnish Resistant 304 Stainless Steel Magnetic Clasps with Glue-in Ends, Barrel, Stainless Steel ColorSize: about 8.8mm wide, 18mm long, hole: 5mm.Sophisticated craft gives these stainless steel Magnetic Clasps with Glue-in Ends a polished sheen appearance. Simple and unusual designs result in rectangle when clasp is closed.