BLACK BEARING B5 Bearing 12X21X7 mm 63801-2RS

Features:

• Especially for cycling, this range with a high quality is perfect to resist to the most extreme circumstances.
• Each component (balls, rings, cages and grease) is manufactured and assembled with precision.
• A Black Bearing B5 bearing is synonym of reliability, fluidity and durability.
• It is the most sold bearing of the range and 100% compatible to replace the original bearings.
• Chrome steel balls SAE52100 abec 5.
• Steel rings SAE52100 with optimized internal design.
• Chrome steel cage.
• Reinforced 2RS seals for better water and dust resistance.
• High quality grease.

Dimensions:

• Inner diameter 12 mm.
• Outer diameter 21 mm.
• Width 7 mm.