3M 2979 2 in x 60 yd 7 mil Contr Grade Multi-Use Duct Tape is an excellent proffesional application tape for tasks such as heavy-duty sealing, bundling, and temporary repairs for more heavy-duty applications. 3M ID 70006736972 3M 2979 48 mm x 55 m 7 mil Contr Grade Multi-Use Duct Tape features a high tensile strength which is neccesary when a strong and lasting adhesive bond is required.