Received this bit today and I can honestly say it's a monster! The problem is that 4 out of 5 carbide inserts were chipped. Only one was perfect. I'm leaving a bad review at this point because for the almost $200 I spent I was expecting 5 flawless deployments. If they send me new inserts without any problems, I will update the review. I have attached a picture of each insert. *UPDATE* I contacted Amana and they offered to send me new inserts for free, so I'm changing my rating to 4 stars for now. I haven't had a chance to use the tool yet as my car will arrive in a week. It appears to be of good quality and should work great but I was definitely upset that it arrived damaged and I had to deal with replacing the inserts. That's why I'm giving it 4/5 stars for now. Will update after I can use the tool if I feel the rating needs changing.