American DJ GT4B 4-Inch Black Gaffers Tape, 45 Yards

GT4B is a 4-inch wide roll of black gaffers tape, 45 yards to the roll. The width is the point: one pass covers a bundle of cable across a walkway instead of the three passes a 2-inch roll needs, which matters when you are taping a stage down against the clock.

It has the cloth-like backing that tears cleanly by hand, so it goes down without a knife, and it lifts off carpet and stage decks without leaving sticky residue. The matte surface takes marker, so it doubles as spike tape and labeling.