Blue Large Propeller for Science DIY

Diameter: 100 mm
Aperture: 5mm in front; Reverse side 1.9mm (tightly fitted with 2mm axle)
Thickness: 10 mm in the center, 4.5 mm in the outer ring
Material: ABS plastic, blue.
Weight: 1 piece, about 14g
Other functions: it can be combined with M2 screw propeller, so that there will be a dent in the middle, which can be used as a large pulley, or a rubber ring can be used as a rubber wheel

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