Thetford (70224 21&#39; Direct Twist-On System Discharge Hose THETFORD - THE CLEANEST, MOST SANITARY WAY TO EMPTY A HOLDING TANK! Its heavy-duty transfer pump macerates waste, sending it long distance - even 20 feet uphill - to a dump! Easy to install and use A- Permanent connection saves handling and setup time, and keeps you clean B- Long-lasting 1" discharge hose stretches to 21 feet, yet retracts to 7 feet long to save storage space C- Drip Cap keeps you clean D- Easy-to-use nouncezle adapts to fit a variety of dump stations - no need for adapters Patented bypass for grey water tank emptying without turning pump on (select models)