Kids can learn how mechanical gears work with these fun building toys
1997 Vtech Electronics Ltd. Play-tech Inc. Vtech Play Tech Motorized Capsela I. F. Remote Control Unit 80-9165 (receiver Accepts Sign And Moves Model Backwards Or Backward)(transmitter Sends Infrared Signal To Receiver) (the I. F. Remote Control Unit Is Compatible With Other Capsela Sets)
gear pitch rack
Hard Steel 32P Pinion Gear, 3MM Shaft, 12T
Expandagon Construction System; Expert Kit
Monsuno Die Cast Metal Ultra Spin Core