General Pipe Cleaners’ Double U-Cutter, nicknamed “The Spider”, features both front and rear blades. Cutting starts as the cable feeds into the line and continues as it retracts — doubling your chances of removing stubborn stoppages, and does a more thorough cleaning job. General offers two “Spider” models, the Double U-Cutter and the Double Heavy Duty Side Cutter. Each comes in 3” and 4” sizes. Double U-Cutters can also be adapted to sectional machines or to other brands of cable-type drain cleaners.