Product description:
New
Made of - materials,
Module: M1
Material: high-speed steel
Aperture: about 22 mm
Color: As shown in the figure
Pressure angle: 20 degrees
Quantity: 8 pieces per set
Each gear is different:
1#: 12-13 gears
2#: 14-16 gears
3#: 17-20 gears
4#: 21-25 gears
5#: 26-34 gear
6#: 34-54 gears
7#: 55-134 gear
8#: ≥135 gears

Package Included：
8 x M1 involute gear (1 to 8)