Copper Jump Ring 18g 5 MM 1 Oz Pack of 350 Metal: Genuine Solid Copper Natural Bright ( Not Plated ) Item:Open Round Jump Ring (Saw Cut ) Durable Rings Wire Size: 18 Ga / .040" / 1.0 MM Ring size: Outside Diameter Approx. 5 MM Quantity: pkg. Of 350 P. / 1 Oz