The HellermannTyton 561-02300 is a label symbol marker for cables and wires. The label symbols are L1, L2, L3, N and Ground. The marker is made of tough, polyester film and can be applied to irregular surfaces without curling or peeling. It is highly resistant to paint, weather, chemicals, abrasion, oil and temperature. The marker is marked with durable, permanent laser printing that is quickly and easily applied to cables. This product is designed to meet the needs for reliable and permanent labeling of cables and wires.