product name: Spur Gear
Modulus: 1 Mod
Number of tooth: 12 to 150 tooth
Material: 45 # steel
Tooth thickness: 10mm
Tooth pitch: 3.14mm
Bore: different batchs, the bore will be a slight different
Shape: flat without step
(Note: for high precision gears, please think carefully, made by gear shaping process, there will be a slight eccentric phenomenon)