The pipe marking with double arrowheads, for easy adjustment during assembly. Using LabelMax high performance tube marking labels in a variety of colors and sizes, you will get UV and salt water resistant, scratch resistant, weather resistant and even chemical resistant (eg oil, ethanol, gasoline, turpentine, alkalis, bases, etc.) labels and signs. The material is optimized to withstand outdoor climates. Therefore, they are perfectly suited for industrial use and for special needs. Cadmium-free, very strong adhesion, for indoor and outdoor use. Size 74.5 mm x 540 mm 65 pcs