Bearings are sold individually and not in pairs.

"61806LLU-LLB" bearing. Best all steel bearing for wheel hubs.

DIMENSIONS ....... 30mm x 42mm x 7mm
SEALS ...... LLU outer/LLB inner
BALL MATERIAL .....Chromium Steel
BALL GRADE ............... 5
RACES ........ Chromium Steel
APPLICATION .... Wheel Hub and Bottom Bracket
GREASE ... Realube Bearing Compound