I'm not a professional rigger, but I know a bit about load ratings and after careful inspection I trust this sling. I did choose to add o-rings to the pins on the long side to push them deeper into the holes made by factory and reduce slop, but that is not required so far as I can tell. My preference is to have as much pin contacting the load bearing steel as possible, and as evenly as possible on both sides of the hooks. Videos are coming out slowly of farmers using these in the field to their rated strength and so far, no one is having any failures. They are NOT TAGGGED for professional use, but the chains are labeled with grade and the CE ratings do appear on hooks along with WLLs.