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Aopin LM4UU Cylinder Linear Motion Ball Bearing, ID 4mm, OD 8mm Linear Ball Bearings Sae52100 Carbon Steel, 4 Rows of Steel Balls, Great for CNC, 3D Printer, Linear Rail Guide 4 PCS ship03 Metal Polishing

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Metal Polishing

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7 D and includes a USB recharging cable

Aopin LM4UU Cylinder Linear Motion Ball Bearing, ID 4mm, OD 8mm Linear Ball Bearings Sae52100 Carbon Steel, 4 Rows of Steel Balls, Great for CNC, 3D Printer, Linear Rail Guide 4 PCS ship03 Metal PolishingAopin LM4UU Cylinder Linear Motion Ball Bearing, ID 4mm, OD 8mm Linear Ball Bearings Sae52100 Carbon Steel, 4 Rows of Steel Balls, Great for CNC, 3D Printer, Linear Rail Guide 4 PCS Precision Steel Ball The card slots are neatly arranged in 4 rows of steel balls, smooth rolling, stable operation, low friction and low noise. Carbon Steel Material, Reliable, Durable and Safe Linear ball bearings are made of durable high carbon steel, high strength high

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