The sizes of Uniform wall thickness down-hole motors we can provide are 6 3-/4 in (172 mm) and 8 in (203 mm).Various downhole motor and assemblies for well size  3 1/2″~17 1/4″ with the following main dimension specifications. To see specific parameters, pls have a look at luhaioil website.

2-7/8 in	73 mm
3-1/2 in	89 mm
3-3/4 in	95 mm
4 in	102 mm
4-3/4 in	120 mm
6-1/2 in	165 mm
6-3/4 in	172 mm
7-1/4 in	185mm
7-3/4 in	197 mm
8 in	203 mm
8-1/2 in	216 mm
9-5/8 in	244 mm