I have Black and Olive Drab Duct Tape that I picked up at a military surplus sale direct from the Canadian Forces. I have asked several people who have told me it is the same as the 100 MPH Tape used during the Vietnam Era. It is extremely strong, very hard to rip as you would normal DT. I use a blade to cut it. It is also very sticky. It is so sticky that if you stick the sticky pieces together it will not come apart. I have used it to repair fiberglass boat hulls, ATV seats and fenders, and it is particularly good to repair ponchos, tents, tarps, etc. <br><br>If the stuff I have is true 100 MPH tape. There is no comparison between this stuff and commercial versions. It does come in very large rolls.<br><br>I am sending a roll to Red Green for his expert opinion. I will also send a roll to ETS if someone will tell me the best way to send it.<br><br>Mariner.