AmericanDJ GT2W 2 in. White Gaffers Tape

ADJ GT2W is 2-inch wide white gaffers tape, the cloth tape used to dress cable runs, mark positions, and tape down anything on a stage that someone could catch a foot on.

White is the colour to reach for when the tape has to be seen: it shows up against a dark deck as a trip warning, and it takes a marker pen so cases, cable ends, and spike marks can be labelled directly on the tape. ADJ catalogues it under Tape as part number GT2W.