Replacement bearings for our rearset brake and gear levers. 
There are 3 types listed below: 

28mm dia x 8mm with a 12mm hole, used on our 8mm thick levers as fitted to all our Fixed & Adjustable rearsets.  BE28-X

22mm dia x 7mm with an 8mm hole, used 2 at a time on our Premium rearsets.  BE22-X

26mm dia x 6mm flanged and with a 8mm hole, used on our old 6mm thick levers, used mainly on some of our older fixed rearsets (but rarely used now). BE26-X