The 2 inch sweep elbow is commonly used with 2 inch rigid pipe and 2 inch flexible rigid pipe.
If you use a sweep when making a 90 degree turn in the pipe work it will help improve flow.
Best to use a plumbing cleaner then pipe cement to assemble. Pipework pushes inside this part.
Internal Diameter: 60 mm
Outer Length: 124 mm
Depth / Diameter: 68 mm