Top quality 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. Black backed foil is ideal for projects where black patina will be used to color the finished solder lines. Foil measures 1/4" wide and 1.0mm thick. Sold in a 108 foot roll. Panels shown by artist Cynthia Svoboda from Delphi's Online Artist Gallery.