KOWOOD Router Bit Bends Itself And Bent My Router Shaft! Update

Update!!! KOWOOD customer service reached out to me after I emailed them and in their broken English reply that started with calling me "dear" and said the tongue bit from their tongue and groove router bit set is for bench use only. After explaining that it wasn't used it was merely tested to see if it was safe to use with the router in my hands, they still haven't replied back to me. I would not recommend KOWOOD Router bits. They may have good sets but the risk of getting an inferior set is too risky. Router bit failure is very dangerous, this happened at just under 16,000 rpm and could have been alot worse. I bought them from Amazon to see if they were worth the 32 dollars and no they are not. The chances of getting a bad set may be low but that is not a risk worth taking. You may end up injured or with a broken router like I did. The shaft is now bent and has a terrible vibration to it making it useless. Even if i could get over the vibration, it will never cut true or as it should again. Thanks for watching.