GPDST-75 - Copper Sheilding Tape. 3/4" wide 5ft long. Copper Shield Tape is used for shielding both pickups and control cavities to reduce noise, hum and radio interference. The self-adhesive backing is also conductive, so overlapped seams are electrically continuous. You can also use this tape to shield pickup coils, pots, wires and interior connections in your guitar to attenuate radio frequency interference.