The top two are sealed as shown in the photos the other two are opened, but not used they are not put together. Look brand new.
TAMIYA EDUCATIONAL Highpower -SPEED GEARBOX H.E. ART 72003 factory sealed
TAMIYA Rail Set for Monorail Train TAM70255 Educational
US Stock LESU Planetary Gearbox for 1/14 RC Tamiya Tractor Truck Dump Truck
Small RC Submarine Versatile Educational Water Resistant Exquisite Look DIY LQHX
Turtle Robot Car COMPLETE Kit Compatible with Arduino UNO Educational STEM DIY
RC Crane Toy,50.4 Inch Tall 2.4Ghz Remote Control Robotic Excavator,Educational
