OMP Hobby M1 Main shaft OSHM1053

Got the parts just haven't take the time to install. Make sure the reginal main shaft is good if not I got it covered with spare parts.
I'll gather parts for complete rebuild if needed in future use.
Just getting into the hobby I need spare part.
Thank you for the help and support, Buddy RC is my go to place future to come.Love helicopter, couple of more I need in the future.
Thank you ; Alvin

The only thing I noticed is the original shaft is solid and the new shaft is hollow. Performance appears to be the same. Once again, BuddyRC service is excellent.