I have been using this set extensively for about 6 months now and am happy to report that each head is still intact and working reliably. For the record, I mostly use them with my Ingersoll Rand 2135TIMAX or Chicago Pneumatic. Impact Wrench CP749. I've used these outlets in everything from tractor repairs to scheduled vehicle maintenance. Trust me when I tell you I fined these outlets and they accepted it. You will get a lot for your money.