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TKR4190 - M5 Pinion Gear, 30T, MOD1, 5mm Bore, M5 Set Screw
"BRUSHED RE-ENERGIZED" Specialized Carbon Brushed for extended life with Zero-Cogging Torque Design.
Includes: Idler gear, 30-tooth/ idler gear shaft (steel)
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.