Detectable Underground Warning Tape (Gas, Water, Electric) Detectable Tape:Yellow Gas 500 lb Capacity Size:1 2" x 50' 500 lb Capacity The Hudson Bay pattern is believed to have originated in the Biscayan area of Northern Spain and was first used in North America as a trading piece along the fur trade routes 2" Wide and has 1000' of Detectable Tape per roll Part Number Description D2105 G Green Sewer Detectable Underground Warning Tape D2105 O Orange Fiber Optic Detectable Underground Warning Tape D2105 R Red Electric Detectable Underground Warning Tape D2105 B Blue Water Detectable Underground Warning Tape D2105 Y Yellow Gas Detectable Underground Warning Tape