Strong and Flexible Tape, Rubber Adhesive, Roll Width 38mm, Roll length 50m. Qty 36 Rolls. Gaffer Tape is the perfect waterproof ducting tape for indoor and outdoor applications. Easy to tear by hand and conforms to uneven surfaces including carpets & fabrics. Ideal for joining plastic sheeting, ducting or air ventilation systems, household repairs, fixing loose items and so much more. Gaffer Tapes’ strong and flexible adhesion to almost any surface also makes it suitable for sealing irregularly shaped packages.