This pack is our most cost efficient gear pack that includes an assortment of different tooth gears as well as bushings to convert the 4mm to a 2mm motor spindle. 

There are 210 gears included with a value of over $100.00 NOW for $39.95. All the gears have a hole size of 4mm that is a friction fit with our 4mm wooden dowels (Cat# 83-2002B02) 

60 X 50 Teeth

30 X 40 Teeth

60 X 30 Teeth 

60 X 10 Teeth 

100 X Bushings