Presco detectable underground warning tape is used for accurately locating and preventing damage to valuable underground utility installations. It has an aluminum backing to make underground assets easy to find using a non-ferrous locator. Properly installed, this tape helps avoid catastrophically inaccurate digging when locating utilities such as electrical lines, gas pipes and communication cables. Tape consists of a minimum 5.0 mil overall thickness, with a 0.35 mil (0.00035") solid aluminum foil core. Construction is 0.8 mil clear film, reverse print laminated to an aluminum foil to 3.75 MIL clear film, making the film permanently printed and plow able. All Presco Products tape meets or exceeds the industry standards including the American Public Works Association (APWA) color code. Measures 1000' length by 2" width, Green with Black Ink color.