To show how airplane wings get floatage in the wind. Most part of it were made by plastic, except the wind exit part were made by Al. Working temperature is -10℃~50℃. Size: Bottom board 530X120X12mm, transparent board with holes 238X1mm 2 rods holding the wing 210X3.5mm, wind exit hole 10X10X190mm, black plastic windblower 220X110mm, Al wing 100X100X20mm. Weight: 2.6Kg