The HQProp 31MMX4 4-Blade propellers will take your micro drone to the next level! These aggressive blades provide great thrust and fast acceleration.

1mm shaft for brushed motors.
Propeller Diameter : 1.22 inch(31mm)
Pitch : 1 Blades :4Material : Poly Carbonate
Weight : 0.27g
Hub Diameter :5mm
Hub Thickness : 5mm
Shaft : 1mm
Adaptor Rings : NO
Includes
2 x CW HQ Micro Whoop Prop 31MMX4
2 x CCW HQ Micro Whoop Prop 31MMX4