Place the faucet template on the concrete countertop near the sink in the desired location. Use the marker to mark the concrete for the holes. Set the template to the side. Check installation instructions for the size holes required.
Insert the hole bit into the drill and secure it into place. Put on the safety glasses.
Line up the hole bit with one of the marks, just above the concrete. Turn the drill on and lower it onto the concrete. You do not need to apply additional pressure to the drill while it is working. Keep the bit against the concrete and let the drill do the work. Repeat the procedure for other holes, if any.