American Classic fully sealed hybrid ceramic cartridge bearings are ABEC-5 and use Silicon Nitrade (SiN4) ceramic balls with 440C stainless steel races. Look for the yellow seals signifying American Classic's top quality ceramic bearings.
- Includes two 688 and four 6803-C3 bearings.
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Just Riding Along Bicycle Shop
6828 Olney-Laytonsville Rd
Laytonsville, MD 20882
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