Meets PPP-T-60 Type IV Class Spec that all Military Supply Officers know. Known for high-speed repairs of nearly anything imaginable ?clothing, aircraft skins, cracked hulls, you name it! Universal usage because it sticks to almost everything. Makes a great waterproof closure on cardboard cartons. Ours is the best industrial grade that is far superior to hardware store silver duct tapes, and even better than our 90MPH Duct Tape. Keep a roll of 100 MPG HD TAPE at home, in your vehicle and in your deployment gear.