AD 56381937, 56601408 Recovery Tank Drain Hose for Nilfisk Advance Scrubbers. A heavy duty reinforced ribbed drain hose which includes the drain hose cap kit (AD 56601411). Measures 48" in length with threaded cap installed. Cap end is sealed with the help of an o-ring. Hose has a 1-5/8" inside diameter with a 2-1/2" diameter hose cuff on the non-cap end. Fits Nilfisk Advance floor scrubber models including BR 1100S SBG Special, BR 1100S, BR 1100SC, BR 1300S, BR 1300SC, Condor/Condor EcoFlex Riders (4030 C/D, 4530 C/D, 4830C/D, including EcoFlex and AXP Models). One recovery tank drain hose required per unit. Priced Each. Replaces Nilfisk Advance 56381937, 56601408. Our Part Number AD 56381937