PG-4839A · 39T Carbide Precision Aluminium Pinion Gear 48 Pitch Lightweight Hard Coated

Source: Yokomo.

To scale, from the tooth count and the pitch.

English translated by Hobbydex from Yokomo's Japanese name (name_ja)

Equivalent to

Generic spec	Match	Standards	Source
39T pinion, 48 pitch	functional		Pitch and teeth parsed from the manufacturer's description; check the bore

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