A great go-to machine for small inside jobs, the RIDGID K-50 weighs less than 40 pounds (18 kg) -- yet packs a mighty punch. Its versatile design allows you to run three different size cables: 5/16 (7.9 mm), 3/8 (9.52 mm) or 5/8-inch (15.87 mm) to clean drain lines 1 1/4" (31.75 mm) to 4-inches (101.6 mm) in diameter. The included A-30 cable provides 45-feet of C-8 cable and works best for 1 1/4" (31.75 mm) to 3-inch diameter drains.