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Diameter: 22 mm.
Module: M1.5.
Pressure angle: 20 degrees.
Bore: 22 mm.
Material: HSS, high hardness, good abrasion resistance.
Each gear is different:
1#: 12-13 gears.
2#: 14-16 gears.
3#: 17-20 gears.
4#: 21-25 gears.
5#: 26-34 gears.
6#: 34-54 gears.
7#: 55-134 gears.
8#: ≥135 gears.
Box contents: 1 x M1.5 Involute Gear