Durable Bicycle Bearing Steel Ball Bearing Bikes Replacement Bearings Silver 

Material: shaft bearing steel
Bearing steel ball is more commonly used: grinding, installation equipment, machine wear, experiments, testing pipelines, industrial ball, etc., the requirements of high hardness and size of the precise customer choice!
Characteristics: bearing steel ball high precision, high hardness, smooth surface, roundness
Good, wear-resistant, not easy to rust!

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