Cordless drain snakes for sink, tub and floor drains. The collection includes the Milwaukee M12 drain snake kit and the M18 FUEL drain snake with CABLE DRIVE and 5/16" cable.
Match the cable size to the drain line: smaller cable for lavatory and kitchen lines, 5/16" for tubs, showers and small floor drains. Cable drive feeds and retracts the cable without grabbing it by hand. For main sewer lines, use a larger sectional or drum machine, and consider a camera to locate the problem.