Ball Bearing, 1" Hex Bore, Outer Diameter: 2.44", Inner ring height: 0.94" Outer Ring height: 0.63".  2 used per row on right hand gathering chain drive. Fits John Deere 50 & 50A series row crop bean head.

Replaces:

FAFNIR: 206KRR6

BCA: HPC100GP

Link-Belt: 16KB206N

NTN: 1AH06-1

John Deere: JD9338