3M™ Multi-Purpose Duct Tape 3900 is an industrial-strength tape that gives you a variety of colours for identification, contrast, decoration, bundling, sealing, holding, protecting and other tough jobs. It is also used to colour code bundles of pipes and conduit, call attention to temporary repairs, secure carpet and wiring to floors and provide attractive seals on coloured surfaces.With one of the lowest profiles of all of our polyethylene duct tapes, 3M Multi-Purpose Duct Tape 3900 is ideal for low-bulk bundling of wires to be pulled through conduit. The natural rubber adhesive gives you instant stick and long-term hold, even on irregular surfaces. The polyethylene-coated, cloth-reinforced backing conforms to curved surfaces and resists moisture and humidity. The tape tears easily, across or down, without curling. One of the most important points to consider when choosing a duct tape is how it is going to be used. When it comes to choosing a 3M Multi-Purpose Duct Tape that meets the need for a particular job, consider the following: 3M Performance Plus and Outdoor Masking Tapes are ideal tapes for indoor/outdoor use, offering clean removal and long term weatherability. Extra heavy duty, heavy duty, and multi purpose duct tapes help provide reliable performance for demanding contractor, MRO and industrial job site applications and general purpose duct tapes offer cost-effective options for general and lighter duty applications such as bundling, sealing, holding, and identifying.