I have this carbine since not even half a year and there are hardly any signs of wear identifiable with him but still my carbine has WHILE he jammed self assurance on rock at umfädeln for rappelling with the result that a second climber had to climb and my climbing partner with a had to free pipe wrench.
So my conclusion is that I will never buy these carabiners and never use it and switch to a better product will at the risk that that will happen again is significantly lower.