3M 3939 Heavy Duty Duct Tape, Silver.94 in x 60 yd x 9.0 mil – Professional Grade Water-Resistant Duct Tape for Sealing, Holding, Bundling and Reinforcing, Case of 36 : Amazon.co.uk: DIY & Tools
3M 70-0062-5015-6 3939 Value Duct Tape, Silver, 2.83" W; 50 yd/RL, 1 RL/Pk from Cole-Parmer Germany
3M™ Heavy Duty Duct Tape 3939, Silver, 96 mm x 54.8 m, 9.0 mil, 12/Case Bulk | 3M Malaysia