2-Leg Chain Slings in grade 100 material are probably the most common setup found on job sites, look up at a tower crane or mobile crane and you'll most likely see a set hanging from the hook. The reason for this over any other type of sling is because they provide excellent balance of a load that requires two pick-points, each leg can be adjusted (if adjustment grab hooks are added) and they're easy to repair Vs. needing to replace the whole sling. In addition, unlike synthetic slings, chains don't wear as quickly or as easily when being subject to the rough conditions that are common-place in the construction and industrial sectors.