Bearings are sold individually and not in pairs.

"688 LLB" bearing. Best all steel bearing for wheel hubs.

DIMENSIONS ....... 8mm x 16mm x 5mm
INTERNAL CLEARANCE RATING: CN (best spec for lighter press fit applications)
SEALS ...... "LLB" light contact dual lip
BALL MATERIAL .....Chromium Steel
BALL GRADE ............... 10
RACES ........ Chromium Steel
APPLICATION .... Wheel Hub
GREASE ... 90% fill Mobil XHP 222