Yup, trying but I can’t even start it, so hard.
I have no idea what makes it hard like glass, but the cobalt drill won’t even start any shaving.  
This cobalt drill is from Home Depot.  Maybe there is one harder than this.  
Anyone has an idea what to do?  
I have already installed the head, would not like to take it off.

Best regards to the Great List,
Zoltan