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Product Description
These are axle inserts for the use of 6x12x4mm ball bearings on your Tamiya F104, TRF102/103 and so on.
It replaces the standard inserts for 6x10x3mm ball bearing.
The bigger ball bearings have a longer lifetime and way more impact resistance.
The inserts come with 1 dot 0.5mm / 2 dots 1.0mm / 3 dots 1.5mm height.