For kitchen, bathroom, laundry drains and pipes up to 3inches. Slide action chuck built into the grip shield which slides back to grip, allowing the cable to work through a stoppage and forward to disengage. Automatic adjustment for different size cables. To change to a different size cable loosen 3 screws, pull front of drum off cable and load in another full cartridge. Double insulated motor with reverse and variable speed trigger switch. Drum Cable maximum capacity - 35ft. x 3/8in. or 50ft. x 5/16in.. Cable(s) included are 25ft.x¼in. 3193Y(25HE1) with Basin Plug Head and 25ft. x 3/8in. 3200A(25HE2) with female connector. Complete with HECS cutter set