1Pcs 6801 2RS Hybrid Ceramic Bearing 12x21x5 mm ABEC-9 Bicycle Bottom Bracket Spares 6801RS Si3N4 Ceramic Ball Bearings

1Pcs 6801 2RS Hybrid Ceramic Bearing 12x21x5 mm ABEC-9 Bicycle Bottom Bracket Spares 6801RS Si3N4 Ceramic Ball Bearings

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