Have had them for several years in 2 different wheel sets and have had no problems at all and they have seen a lot of use and some jumps and drops and rough terrain. mine have always been built with brass nipples. I had a third wheel set with straight gauge spokes and I had a bad case and broke several spokes. These seem much tougher.
Nothing i can think.
Nice strong spokes i will continue to use and when I get new wheels I will use these spokes again.