DR21531 LLB Enduro Bike Double Row Ball Bearing

Precision Tolerance: ABEC3

Ball Roundness : Grade 10

Seals: LLB

Material: 52100 High Carbon Chromium Alloy Races

Used on: Hubs, Bottom Brackets

LLB is a double-lip type seal making light contact and also rides in a groove making a labyrinth seal.