Duct tape, also called cloth tape, is a long-lasting adhesive tape which can be easily torn by hand. It’s suitable for indoor and outdoor use thanks to its strength and water resistance. It’s available in various widths, lengths and colours – with the most common colours being black, silver and clear. As well as this, there’s double-sided duct tape which is coated in adhesive on both sides. This is ideal for sticking two objects or surfaces together without making holes or the tape being visible. Duct tape can have different grades, which help determine the applications it should be used for. The grade refers to how the tape is made – so the type of adhesive used and the strength of the cloth backing. The strength of the cloth backing depends on the number of threads it has, with more threads making it stronger and therefore more difficult to tear.