HIGH QUALITY ENDURO BEARING BICYCLE FRAME PIVOT BIKE CYCLING BALL ABEC 3 OR 5
CYCLING BALL BEARINGS ABEC 3 OR 5. ENDURO BEARING. High precision balls are within 10/1,000,000″ round, twice as round as the industry standard, at it’s highest level. 52100 High Carbon Chromium Alloy Races.