The RIDGID T-250 (48482) 5-Piece Tool Set for 3/8 in. Cable includes a bulb auger that ideal for the initial and exploratory stage of drain cleaning. The included spade cutter is designed for following up after augers have been used, helping to open up floor drains. The "C" cutter is excellent for blockages in lines leading from a garbage disposal unit or waste pipe, while the drop head auger is ideal for cleaning back to back mounted fixtures, such as sinks where the cable needs to be led into down pipe. The tool set is suitable for use with K-40, K-45, and K-50 sink machines.