Climbing gear strength testing from the Alpine Club of Italy (CAI) with English subtitles 

Thank you for the English subtitles 💪🏻 And for this amazing video.

Thanks for this! Most surprising takeaway for me is the 5.5mm to 9.8mm flat overhand connection having similar strength as same diameter connections.

Dude that one-handed overhand knot tying is pretty slick at 9:21. I guess if you run out of quickdrawss and happen to have an untied bit of cord on your harness you could give that a go on lead?? Also the joining hitch they show at 9:45 is actually a Strop Bend and is a little different and bit stronger than a true girth hitch (what they call it), especially for slings of different thickness. Then next test after that is a true girth hitch, however. The Strop bend allows a larger bend radius in both strands of webbing vs a girth hitch where one basically gets pinched by the other. Glad they tested carabiners in bending at 12:24 ! That was really cool to see, and breaking at less than the cross-load or open-gate strength when bent (I'm guessing, looks like the old BD Positron straight gate which is 8kN in both those ratings). This should be a consideration when using super lightweight carabiners near rock edges, it's not just about their 20+ kN perfect-scenario load rating, they will also likely break at much lower forces in a weird bending situation than a slightly larger/heavier carabiner!