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. Applicable for all kinds of outdoor pipes of 50-200mm. 2. User friendly---multifunction, heavy duty type, the main machine and soft shafts have walking wheels, one man is capable of doing complex pipe cleaning jobs easily. 3. Special ...