RV Flex Hold Tank Rinser, Patented Holding Tank Rinsers With Shut Off Valves Dislodge & Flush Stubborn Waste Deposits &Odor Causing Particles Left After Holding Tank Is Emptied, Powerful Rotary Cleaning Action Reaches Corners & Walls Of Tank, One Quarter Turn Shut Off Valve At Your Fingertips, All Brass Moving Parts, Flexible Swivel Stik Has A Flexible 55-1/2" Reach For Basement Holding Tanks.