Nickel-Silver 30 Gauge Sheet - 6" x 6" Nickel-Silver - CDA #752 (65% Copper, 18% Nickel, 17% Zinc) Nickel-Silver is a trade name. This product does not contain any silver. 6 Inch by 6 Inch Sheet Thickness: 30 Gauge / 0.010" / 0.25 mm Unpolished