3M420 Dark Silver Lead Foil Tape, Electrically Conductive Tape
Electronics Tape | TapeCase
Amazon.com: Kraftex Copper Tape [1 Inch x 66ft] Copper Foil Tape for Guitar Cavity, Electrical Conductive for Soldering, Stained Glass, and More (1 Inch) : Industrial & Scientific
Part # 9706, 3M™ Electrically Conductive Adhesive Transfer Tape On Converters, Inc.