Canplas 192223 PVC DWV 90-Degree Bend 4 x 3 1/4-Inch, White - Pipe Fittings - Amazon.com
Amazon.com: NDS 4P02 PVC 90-Degree Elbow, X Hub solvent-weld connections, for Use with 4-Inch Sewer and Drain Pipes, White, 1 Count (Pack of 1) : Everything Else
NDS PVC S&D 45° Elbow, 4 in. Hub X Hub 4P03 - The Home Depot