I get my shackles tested at work my 9000 kg snatch strap has. Been used 5 times this year for gentle pulls they won't tag it as its not a lifting strap as its elasticated. My issue is if its claimed to be rated I want to see the proof before I purchase if I can't see the proof for testing engineering certs then I may as well make my own and say they're rated especially with the welded rear bracket is it just a 6mm con fillet around it or full pen v prep weld has it been x rayed ultra sound or mag particle tested if so what percentage of production etc. I can obtain this info for my strap (self checking ) and shackles