20 Ga Vintage Copper 4 Mm O/d Jump Ring 340 P. 1/2 Oz Saw-cut Made in USA Metal: Genuine Solid Antique copper Natural ( Not Plated ) Item:Open Round Jump Ring (Saw Cut ) Wire Size: 20 Ga / .032" / 0.80 MM Ring size: Outside Diameter Approx. 4 MM Quantity: pkg. Of 340 P. / 1/2 Oz