1. buried underground and easily detected by equipment. 2. used for warning to the public 3. logo or color can ... suitable caution tape. Product Description:Detectable caution tape is widely used on the underground water pipes, gas pipes, optical fiber cables ... , 0.035mm, 0.04mm, 0.045mm, 0.05mmwidth5cm, 7.5cm/2", 3"length90mm, 300m/300", 1000" Other sizes are available.