The William carabiner is a large frame, high load model. 27kn rating! Nice snag-free key lock design, with a wide gate opening. I typically use this as a masterpoint on multi-pitch trad anchors and top rope anchors due to its strength rating and it's rope capacity. There's more than enough room to clove hitch a 10.2 rope twice! As with other Petzl screw locks, if the lock is overtightened or tightened while weighted it can get stuck. Simply reweighting or tapping on the screw lock while unscrewing it typically fixes the issue. I can see sandy areas causing an issue with binding on screw threads, but that isn't an issue that is unique to just this carabiner, it can affect all parts with threads. Overall fit and finish is exemplary, and the red indicator band is a nice touch.
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