10pcs F684ZZ Mini Ball Bearings Double Shielded Flanged Ball Bearings for 3D Printer Model 4x9x4mm
Special Features
- 【bearing steel】These mini bearings are made of high quality bearing steel for low noise and long service life.
- 【4x9x4mm】Bearings have a 4mm inner diameter, a 9mm outer diameter, a 4mm thickness and a 10.3mm flange.
- 【double shielded】All F684ZZ bearigns are double shielded to avoid contaminants entering, also can save lubricant and extend the service lfie.
- 【variety applications】These are for 4mm shaft/rod projects such as electric motor, 3D printer, quadcopter or ship model.
- 【economical 】There are 10 pieces mini bearings which you may use for many different projects.
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