3M ScotchCode SDR wire marker tape refill roll is pre-printed with 6 numbers for every inch and is ideal for phase identification on large or small-gauge wire or cable and for automotive applications on tubing, hoses and replacement parts. This tape is also ideal for identification of terminal blocks/strips, wire in panel boards or a piece of switchgear. - This thin and conformable tape meets ASTM D-1000 standard test methods, making it great for industrial electrical applications. It is compatible with the 3M STD ScotchCode tape dispenser that provides easy and ideal usage.