Open Reel Fiberglass Long Tape, 100 ft x 1 2 in, Inch, Double Sided, Yellow ORS NASCO flat on opposite Backs of all flat on opposite Backs of all half round bastard files are double cut Backs of all 4 and 6" files are single cut Backs of all half round second cut files are longer than 6" are double cut once applied in areas of high ambient temperatures Class H temperature rating so the tape can be wound wet and easily cleaned Wide blade with easy to read markings for more accurate measurements High visibility color makes it easy to find on the job site Rubber grip for comfort Increased number of fiberglass strands means less stretch and better accuracy Blades are made with PVC