HQProp Thin Electric Pusher 12X6R 2-Blade Propellers (Black)

Specifications:

Propeller Diameter: 12 inch       
Pitch: 6                 
Blades: 2
Material:  Carbon fiber Composite 
Weight: 18.4g
Hub Diameter: 18mm           
Hub Thickness: 7.5mm           
Shaft :9.5/8/6mm
Adaptor Rings: 6/5/4/3