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Amazon.co.jp: uxcell Deep Groove Ball Bearings 6201-2RS Deep Groove Ball Bearings 0.5 x 1.3 x 0.4 inches (12 x 32 x 10 mm), Double Seal Carbon Steel, 5 Pieces : Industrial & Scientific
Amazon.co.jp: 628ZZ Ball Bearings 8mm x 24mm x 8mm Double Shielded 628-2Z 80028 Deep Groove Bearings, Pack of 10 Carbon Steel : DIY, Tools & Garden
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