Detectable Underground Tape, 3 IN Roll Width, 1000 FT Roll Length, Caution Buried Electric Line Below Legend, Solid Aluminum Foil Core, Red, Thickness: 5 MIL, Elongation: 80 PCT ASTM D882-75B, Composition: IDEAL Specs: Bottom Layer PE, Top Layer PET, Foil Industry Standard, Tensile Strength: 35 LB/IN (15000 PSI) ASTM D882, For Protection, Location And Identification Of Underground Utility Installations