A conduit reamer for a cutting tool includes a generally cylindrical body having a longitudinal axis and a blade coupled to the generally cylindrical body. The blade includes a first blade portion defining a first height of the conduit reamer with respect to the longitudinal axis and a second blade portion defining a second height of the conduit reamer with respect to the longitudinal axis, wherein the first height is different than the second height. The conduit reamer further includes a shank end having a shank configured to be received and driven by the cutting tool, a bit end opposite the shank end and having a cavity configured to receive a tool bit, and a locking mechanism positioned proximate the bit end and configured to secure the tool bit within the cavity.