Although this is not a duct tape, it is used like duct tape by electricians in the film industry - thus the name. It is preferred by gaffers for taping wires or carpets since it leaves no adhesive residue and has a non-reflective, matte finish, yet it is a strong tape.
This waterproof cloth tape is 180' (55m) long, 1 7/8" wide, 10.5 mil thick, and has a tensile strength of 45 lb per inch. Although it tests stronger than heavy-duty duct tape, this is on a straight pull. Where things taped together are twisted apart, heavy-duty duct tape will better resist tearing.
Made in Canada.