Whats the largest one would anticipate being able to drill with a 1/2in chuck hammer drill (corded)? Planning on running some 1/2in conduit through a basement wall (above grade) and hoping/wondering if there are any bits out there large enough that would fit my existing tooling. I don't foresee needing to do this more than 2-3 times in my life, but I don't mind buying a bit if it'll work... FWIW I bored some 5/8in holes the other day in cement without any trouble...