These are some nice Carbon Blades for Multi-rotor projects, they are supplied as a counter rotating pair (1 left + 1 right). These blades weigh 17g each and are very well finished! This propeller pair is supplied with contentric centering rings to ensure accurate centering.
Specs:
Diameter: 12 inch
Pitch: 3.8 inch
Hub thickness: 8mm
Shaft diameter: 6mm
Weight(each): 17g