This propeller is ideal for medium to large multi-copters flying the Turnigy 2217 or stronger motors. For a quadrocopter you will need quantity two 12x3.8 slow flyer and quantity two 12x3.8 slow flyer pusher propellers. It is highly recommended to get spares to prevent any downtime with your multi-copter!
Hub Diameter: 0.50"
Hub Thickness: 0.30"
Shaft Diameter: 1/4" Engine Shaft Diameter