1. heavy duty machine, drain cleaner, 2. outdoor use, powerful motor, good and flexible shaft Heavy Duty Drain Cleaner Outdoor Use: ~~Features and Application:1. ... pipes of 50-200mm. 2. User friendly---multifunction, heavy duty type, the main machine and soft shafts have walking wheels, one man ... 8. Cleaning Length: 50m 9. Flexible Shaft: 30mm*5m Heavy Duty Drain,Sewer Cleaner(outdoor drain cleaner)