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Spur gears steel module 0.5 helical toothed
Helix angle 20 ° left
with hub and M 3 tapped hole in the hub
(Gew.-Bore not on wheels with 10 teeth)
These helical spur gears are made RIGHT and LEFT-DISTANCE.
A pair of rollers with 20 ° helix angle each include 1 right-hand and 1 left-hand helical gear.
Right-hand teeth only in brass, left-hand gear only available in steel.