The kit is sufficient for one coach
It consists of:
2 x 3D printed inside bearing frames
10 x 5mm O/D bearings The kit comes with 2 spares
I do have a few spare inside bearing frames in the event that the print is not usable. Please get in touch if you receive an unusable 3D print
Please read the Manual sheet (link below) before purchasing either this kit or or the wheels, particularly the paragraph headed Important - Axle Constraint
Converting Bachmann Birdcage Coach