10 x Micro Steel F623ZZ Flange Ball Bearings with 3x10x4mm. 30 pcs F623ZZ Flange Ball Bearings with 3x10x4mm printer accessory. 20 pcs F623ZZ Flange Ball Bearings with 3x10x4mm printer accessory. Srtict quality inspection system insures you product.This item is manfactured with premium material for and long lasting use.
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