First time I have seen a bad Xoar prop but I'm sure it happens. The HS I buy them at has them all in a big bin so you have to look through a lot of props to fine the size you want. Some of them have gotten knicked up quite a bit on the edges over time and I don't bother buying any before I inspect them very well. The bin has many makes and sizes, all of then from 16 inches and bigger. That one is an accident looking for a place to happen!!