Material: Made of pure natural materials, made from wood pulp and cotton pulp. One side adhesive backing; Size: 200mm(7.9in) Wide, 3M(9.9ft) Length, Thickness 0.2mm; Advantages: The products are good insulation, wear resistance, corrosion resistance, tear Resistance, easy to peel and stick; Application: Worked great while making battery pack. For 18650 21700 26650 Lithium Battery Pack;