Duct Tape 1.88 in x 60 yd - Heavy Duty Silver - 9 mil - 12 Pack This 9 mil Shurgrip Heavy Duty Duct Tape provides aggressive adhesion and excellent cold temperature performance Consistent, low force unwinding and easily hand-tearable. This tape is durable through all weather conditions. Tensile strength: 20 lbs/in width. Elongation: 20 percent