ABS 45° elbow for a gentle change of direction in an ABS DWV line — the half-quarter bend (a 1/8-bend in trade shorthand) that eases a drain or vent around an obstacle without the abrupt turn of a 90. Both ends are hub sockets sized for Schedule 40 IPS ABS, solvent-welded for a rigid joint that keeps flow moving on the drainage side. It meets ASTM D2661 and CSA B181.1 and carries cUPC and NSF/ANSI 14 certification, the listings an inspector checks on a residential or light-commercial rough-in across the GTA. Stocked in 1½", 2", and 3" — the sizes that handle most offsets and angle changes in branch and stack work. A 45 is a non-pressurized DWV fitting only; test the system hydrostatically, never with compressed air or gas.