Grey Engineering Material..
..We used to call it. And it is kinda silly to buy a short piece like this, when you could just pull some off the roll you have kicking around your car... but...
I consider this an essential part of my First Aid Kit. Useful for splinting, bandaging, stabilizing, and for pulling out cactus spines, especially those Beavertail little tiny ones.
This package is nice. Two small rolls. You will need to check it once in a while, because it tends to "rot" and be no longer sticky after some time kicking around in your pack.
Size: Duct Tape (2 rolls 2" x 50")
Weight: 1.4 ounces (40 grams)