18 Ga Antique Copper 4.5 Mm O/d Jump Ring 400 P. 1 Oz Saw-cut Made in USA Metal: Genuine Solid Copper Antique ( Not Plated ) Item:Open Round Jump Ring (Saw Cut ) Durable Rings Wire Size: 18 Ga / .040" / 1.0 MM Ring size: Outside Diameter Approx. 4.5 MM Quantity: pkg. Of 400 P. / 1 Oz