This roll of Electric Blue Gaffer Tape from Devek measures 1/2" by 50 yards and is designed with convenience in mind. Made of durable vinyl-coated cloth with a high tensile strength, this tape can be easily hand-torn and comes in a matte finish that does not gleam under light. Its high-tack adhesive coating allows it to be easily attached to most smooth surfaces, and avoids leaving a messy white residue when removed. Gaffer tape is used primarily for theater, musical venues, and film production, and is an essential tool for any professional lighting technician.