I made a couple choker chains at work out from a set that was used to load strand reels on the inboard holders of telsta/altec bucket trucks.. They are all 3/8" chain, not sure of the grade, but I can put about 30,000 lbs of force on them and they are fine.. I had enough hardware and add-on links to make a 4" and 6" chain that each have master links on both ends that I use to place and remove telephone poles.. Made another 7" chain with a master link on one end and a sliding choker hook on the other.. For what I do, I found the chains to be a huge upgrade over regular steel slings.. They hang nice inside the utility doors on hooks, and never get damaged,splinter, and get stuck from having gotten embedded in the pole..