This is the Mini Motor Multi-Ratio Gearbox (12 Speed) from Tamiya's Educational Construction Series.
REQUIRES:  Hobby knife
COMMENTS: Due to small parts that could cause a choking hazard please keep away from children 3 years of age and younger.
Used with permission, copyright ©2014 Tamiya America & Hobbico, Inc.
Copyright ©2014 Brey Corp. t/a Hobby Works.