6x0.5" (15.25 x 1.25cm) nickel silver metal sheet. Approximately 0.03" (0.81mm) thick, 20 gauge. Stampable cuff bracelet blanks. While nickel is silver in color, it does not contain any actual silver. Nickel silver 770-H02. ASTM B122 (55% Copper, 27% Zinc, 18% Nickel). Slight surface imperfections are typical, and are easily removed with 000 steel wool. Remove plastic film before using. 20-gauge is a great thickness for etching, piercing, stamping and other metal-working techniques.