This is the 2 step pilot used on later model Lionel #2328 GP-7 and GP-9.
Commutator used in all veritcal, pre & post war, armatures. Mfd by Model Engineering Works
This is two (2) pairs of motor brushes and matching springs to revitalize most Lionel post war steam and diesel locomotives. This set contains four (4) #622-121 motor brushes and four (4) #622-191 springs.