I remain disappointed that companies like Dewalt that used to make great beats in the US have outsourced to China and are selling inferior tools. That may be good for corporate profits, but not for consumers. These bits are not very sharp and will dull after about three days of constant drilling into oak. I almost gave up. None of the famous American companies make their own instruments here. I used to love the Crescent tools. Even now they are all made in China.