What information must be included on a sling tag?

The correct choice includes essential details that ensure the safe use of a sling. A sling tag must contain the material from which the sling is made, the working load limit (WLL), the length of the sling, and the manufacturer's information. This information is crucial because it allows users to easily identify the specifications and safe load capacities of the sling being used.

Knowing the material helps in assessing compatibility with the loads being lifted and the environment in which the sling will be used. The WLL is critical to prevent overloading, which can lead to sling failure and accidents. The length is necessary for understanding how the sling will fit into the rigging configuration and ensuring that it is appropriate for the distance and height of the lift. Lastly, the manufacturer's information provides a point of contact for any technical queries or if a recall is necessary, further ensuring safety and compliance with standards. Therefore, all this information is vital for proper sling usage and safety in lifting operations.