Edco copper foil is made with “dead soft copper” and boasts the strongest adhesive in the industry. It sticks closely to each piece, even around tight curves, adding strength to your finished piece. Copper backed foil is ideal for projects using opalescent glass or for projects where copper patina will be used. Foil measures 5/16″ wide and 1.25mm thick. Sold in a 108 foot roll.