Feature 1 Applicable for both indoor and outdoor small pipes ofΦ20—65mm in lavatories. 2 UsingΦ8mm*6m enhanced inner core flexible soft shafts, the enhanced plastic cores are added to improve twisting transmission against twisting torque and winding. 3 Entirely sealed structure, soft flexible shafts are put in large metal barrels, to ensure cleaner and more convenient use. 4 Shift with stepless 0-450 rpm speed adjustable, for adept passage through curved pipes. 5 Automatic device effect feeding and backing with maximum speed of 5m/min. 6 Battery pack power: 18v 7 2400m AH Capacious battery. 8 Rated voltage: 220v, 110v optional.