It meets or exceeds all known industry standards. Backing: Aluminum foil-backed double-laminated polypropylene film,Non-Adhesive Colors: Blue, Green, Orange, Purple, Red, Yellow (Other Colors are available upon inquiry) Width: 2inch, 3inch, 6inch Length: 1000Ft Thickness: 4Mil, 5Mil, 6Mil Package: Each pcs in a polybag (Other sizes & thickness are available upon inquiry) -Used for accurately locating and preventing damage to valuable underground utility installations. -An aluminum backing to make underground assets easy to find using a non-ferrous locator. -Properly installed, will help avoid catastrophically inaccurate digging when locating utilities such as electrical lines, gas pipes and communication cables. -Easily located using cable locators by direct connection -Marking underground utility lines, gas pipes, communication cables and more to warn excavators and to prevent damage, service interruption or personal injury -Use for non-metallic underground installations such as utility lines, PVC and non-metal piping -Permanently bonded between two layers of rot resistant plastic to prevent corrosion and increase its tensile strength. -Durable laminate construction will not scratch off or peel apart -Permanently imprinted with black ink - installed 12"-18" below ground level and 12" directly above buried pipes, cables and conduits, before final backfilling. -Withstands temperatures from -60oF to 250oF-Custom printing of underground detectable tape is available upon request. DETECTABLE MATERIAL COLORS BLUE: Water & Associated Lines GREEN: Sanitary & Associated Sewer Lines ORANGE: Telecommunications Lines PURPLE: Reclaimed Water Lines RED: Electric & Associated Lines YELLOW: Gas & Associated Lines