HQ has a prop for every occasion, and this time it whoops! These 40mm bi-blade props are a perfect combination for your indoor ripper. Specifications Diameter: 40mm Pitch: 1″ Blades: 2 Material: Polycarbonate Hub Thickness: 5mm Shaft Thickness: 1.5mm Weight: 0.26g Includes 4x HQ Prop 40MMX2 Bi-Blade 40mm Micro/Whoop Props

Propeller Diameter : 31mm Pitch : 1 Blades : 2 Material : Poly Carbonate Weight : 0.2g Hub Diameter :5mm Hub Thickness : 5mm Shaft : 1mm Adaptor Rings : NO Includes 2 x CW HQ Micro Whoop Prop 31MMX2 2 x CCW HQ Micro Whoop Prop 31MMX2