Conduit rodders operate like oversized fish tapes to pull extra-long lengths of wire though cable vaults, underground utility tunnels, and extended conduit runs. They feed flexible rod from their large-diameter reel until it reaches the end point, attach the end of the rod to the wire, and reel in the rod to pull the wire back through to the starting point. Conduit rodders are commonly used by telecom, electrical, and utility installers.