Electric Eel’s model D-5 drum machine runs 3/4” diameter Tri-Max cable for cleaning 3” to 10” diameter lines up to 100’. The high-density polyethylene drum and belt guard will not rust or dent, the company said. Three sealed heavy-duty ball bearings support the drum and a thick wall-guide tube extends wear. The unit is powered by a heavy-duty 1/2 HP capacitor-type motor to provide additional torque. The power feed and drum can be quickly removed, while a loading wheel is built into the handle.