Amazon.com: Camco RhinoFLEX Clear 45 Degree RV Sewer Hose Swivel Fitting- Allows You to See When Tank is Empty, Odor Protection; Durable and Secure Connection (39847) : Automotive
EZ Coupler Self-Threading RV Sewer Hose Adapter w/ 3" Lug Fitting - Red EZ Coupler RV Sewer Hose Fittings F02-3108
Valterra Male To Female Sewer Hose Connector T1029-2 - RV Parts Express - Specialty RV Parts Retailer
Camco RV Easy Slip Elbow and 4-1 Adapter | Features a Larger Inside Diameter for Faster Dumping and Adapter Fits 3-Inch Slip or 3-Inch,3.5-Inch and 4-Inch Threaded Pipe (39144) - Walmart.com
Combo Pack) RV Sewer Hose Fitting Adapter to PVC, RV Sewer Connection & RV | eBay
Easy Slip Elbow Fitting and 4-in-1 Adapter for RV Sewer Hose (39144) - Johnson's Surplus LLC