What defines an endless sling?

An endless sling is specifically defined by its construction, which involves a continuous loop created by doubling over the material and sewing or otherwise securing the ends together. This design allows the sling to be used in various orientations, effectively distributing loads more evenly and minimizing wear over time, as any part of the sling can be utilized without identifying a specific 'top' or 'bottom.'

In contrast, the other options do not accurately describe an endless sling. A definition that suggests the sling can stretch indefinitely does not align with the characteristics of standard lifting slings, which are designed to maintain their structural integrity under load. A description stating that the sling has no ends also misses the key attribute of the endless sling, which is its continuous loop formed by the two ends being joined together. Lastly, a sling that cannot support weights does not fulfill its intended purpose and, therefore, does not represent an endless sling or any functional lifting apparatus.

This understanding keeps safety as a priority by ensuring that slings are used correctly according to their definitions and applications.