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Customize your Mini 4WD machine with these eye-catching Grade-Up Parts.
Specs & Features
- 520 ball bearings have less friction, there by producing a smooth rotation performance.
- Compatible with any Mini 4WD and Mini 4WDPRO machine.
- Set contents:
- 2x8mm screw x 2pcs.
- 520 ball bearings x 2pcs.
- Rubber rings x 2pcs.
- Aluminum spacer x 4pcs.
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