The RIDGID 37728 ASM Motor (115V) is a genuine replacement motor designed specifically for any RIDGID Drum Machine that requires a motor of 115 Volts. This RIDGID 37728 ASM Motor (115V)r is the heart of the drum machine. Drum Machines are a powerful, self-contained drain cleaning machine designed for lateral drains. These Machines clears roots, debris and foreign objects out of main lines, storm drains, house laterals and leach lines. This RIDGID 37728 ASM Motor (115V) is approved by CSA and UL Standards (115V only).