gears there are many like them but these are in pairs —

Founded gears there are many like them but these are in pairs models & stl files for printing
Chemistry ion Dice
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Boxes
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Gears of hate
jeffreyernst
Triple Gear
clivebradshaw
GEARS! Metric
icybaker
GearedBowls
Jürgen Weigert
Ultimate Drawer System
MarcElbichon