P1 Cassette, Heat Shrink Tubing, Mil Grade Polyolefin, 1 Inch Wide x 0.44 Inch High, Yellow, Fast loading P1 Label Cassette includes both label material and ribbon to make changing labels easy, Meets print performance requirements of MIL-M-81531 and MIL-STD-202F Method 215A, Solution A, C, and D, Meets UL Standard 224 for flammability, Shrink ratio 3 to 1, Non-adhesive flattened heat shrinkable polyolefin for wire/cable identification.