The Factory Pro 3mm Red Collar Set makes it straightforward to tweak spacing on bearings, axles and linkages. Supplied with five collars of each thickness, it helps you experiment with small changes until the handling is right.
These collars are ideal for adjusting track width, shimming bearings or refining gear mesh. The red finish aids quick size recognition during busy rebuilds or setup sessions.
Intended for standard 3mm shaft installations, the set is a useful addition to any hobbyist toolkit for repeatable spacing and quick swaps between runs.
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