1 1/2" to 4" (30 mm to 110 mm) Drain Lines3/8" (10 mm) cable best for 1 1/2" to 3" (40 mm to 75 mm) lines.1/2" (12 mm) cable best for 3" to 4" (50 mm to 110 mm) lines.Integrated Transport Cart - Easy movement to and from the job site. Heavy-duty, large wheels easily navigate over bumps and up stairs.Retractable Handle - high-handle height during transport.Cable Control System - causes the drum to stop spinning when the blade becomes lodged in a blockage, limits potential for cable to flip-over in the drum and helps to indicate to operator when blockages are encountered."Solid Core” Cable - uses tough 3?8" (10 mm) or 1?2" (12 mm) Integral Wound (IW) solid core cable that is rugged and kink resistant.AUTOFEED® Control - offered as an accessory, this patented, automatic cable feed powers cab