There is huge variety of bushes. A list of commonly used bushes is displayed here.
Round bushes are hardened & ground.
Where as oval bushes are broached finished ground & nitrided for surface hardening.

Liner Round Bush ID x OD x LENGTH-
1] 19 x 28.62 x22L
2] 19 x 30 x 22 L
3] 25 x 35 x27 L
4] 25 x 36 x 27 L
5] 30 x 45 x 28 L
Liner Oval Bush A/C F x OD x LENGTH-
1] 19 F x 28.62 x 22 L
2] 19 F x 30 x 22 L
3] 21 F x 38 x 27 L
4] 25 F x 36 x 27 L
5] 25 x 45 x 28 L