ITEM NAME:2x Roll of Copper Foil Tape Transformer Copper Foil Shielding Tape for Phone Description: - EMI shielding for electronic components - Shielding for the back of guitar pickguards and cavities - Eliminate Electrical noise and humming - Copper trace repair on printed circuit boards - Arts and Crafts Package Included: 2x Roll of Copper Foil Tape.EMI shielding for electronic components. - Shielding for the back of guitar pickguards and cavities. 2x Roll of Copper Foil Tape. - Copper trace repair on printed circuit boards. - Eliminate Electrical noise and humming.