Wooden hydraulic excavator model handmade scientific experiments steam

SINONING

$12.90 

Wooden hydraulic excavator model handmade scientific experiments steam
    This excavator through the analog hydraulic system using three buttons to control the excavator telescopic and height, this excavator through their own hands to better understand the mystery of the assembly. Note that this is used for science learning diy assembly model, the structure is simple, please keep it safe Oh.
   Use a new syringe (not pin), a wood material designed.
 
Floor length: 22 cm
Base plate width: 14 cm
Overall height: 28 cm
Power Source: Manual
weight:230g
Note: this is a diy kit, you need to assemble by yourself.

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