So this is a solid bit that cuts really well. However, it was advertised as a 10 pack (the stock image has a small image in the top right corner which is misleading). I usually use a few cheaper bits as my machine isn't the stiffest and they aren't usually that hard so are less likely to break (also have extras just in case). However, I think it will help me get the job done. Low rating only because of misleading picture.