The Factory Pro FP-M-AC5010RD 5mm x 1.0t red collar is a small but useful component for achieving repeatable spacing in RC models. Supplied as a ten piece set, these collars are practical for both routine tweaks and larger rebuilds.
These collars are suited to applications that need stable gaps, such as axle spacing, link geometry adjustments, or setting end play. Their 5mm diameter and 1.0t thickness make them compatible with many common hobby parts.
The collars are straightforward to fit by sliding them onto the shaft and checking seating and alignment. For long runs, confirm they are secured by any existing retaining method on your model to prevent movement under load.
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