Spindle straight tooth gear 81A 0.5 module 8 teeth 0.95MM hole inner diameter hollow cup motor gear toy parts (4pcs)

81A gear: 8 teeth, 1A means it fits tightly with a shaft with a diameter of 1.0MM. The hole diameter is about 0.95 mm
0.5 means module, the module of this gear is 0.5
Calculation formula of outer diameter of gear: Outer diameter = (number of teeth 2) * 0.5

81A gear
Hole diameter: 0.95mm
Diameter: 5mm
Height: 5mm