These are some nice Carbon Blades for Multi-rotor projects, they are supplied as a counter rotating pair (1 left, 1 x right). These blades weigh 19g each and are very well finished! This propeller pair is supplied with contentric centering rings to ensure accurate centering.

Specs:
Diameter: 12 inch
Pitch: 6 inch
Hub thickness: 8mm
Shaft diameter: 6mm
Weight(each): 19g