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Includes: Gear, 31-T pinion (0.8 metric pitch, compatible with 32-pitch) (fits 5mm shaft)/ set screw
The "Pro" Pinions are precision machined from aircraft aluminum, lightened and then they're coated twice with a super hard, black anodize.
The 48 Pitch Hard Nickel Plated Alloy Steel Pinions are precision cut gears that last and last when used with a plastic spur gear.
2431 - Pinion Gear 48P 31T with Set Screw