Timken Fafnir RC1 7/16 Ball Bearing Cartridge – 1-7/16″ Bore New in Factory Box
1-7/16 in Bore 3-7/8 in OD, 1-9/16 in Housing Width, Cast Iron, Eccentric Collar. New in Factory Box.
WJB 6407 Radial Ball Bearing-Open AT1 V07 3-7/8″ Outer Diameter
A nice touch is that the unbranded design lets you fit it into various setups easily.