This is a new A 5 ball bearing that fits Albion 2 and 3 speed lightweight transmissions from 1931 to 1973. This is also correct for a Rokon or Nethercutt motorcycle that is equipped with an Albion 3 speed The shields can be removed if you want an open bearing.
This is also a crankshaft bearing for a US820, West Bend, Chrysler Power Bee 820 engine.
Albion part number A 5
Power Bee part number 127910-2.