HQProp R42 5.1x4.1x3mm RACING PROPELLER - Grey (Pack of 16pcs)

HQProp R42 5.1x4.1x3mm RACING PROPELLER - Grey (Pack of 16pcs) Racers asked for slightly stiffer and faster version of the popular HQ 5.1x4.1x3 This is the answer from HQ!This prop was designed having in mind only one thing, RACING! Specifications:Propeller Diameter: 5.1inch       Pitch: 4.1               Blades: 3Material: Poly Carbonate        Weight:4.9gHub Diameter :13mm           Hub Thickness:7mm           Shaft :5mm (Compatible with POPO motor)Adaptor Rings: NO Package included:8x HQPROP R42 RACING PROPELLER CW8x HQPROP R42 RACING PROPELLER CCW