The Gemfan Hurricane DP 51477 3-Blade has been designed as a high-speed propeller. These props have a diameter of 5.1", 4.77" pitch, 5mm shaft hole, and only weighs 4.15g!Choose a color! (Yellow, Blue, Clear Black, Red, Purple)SpecificationsDiameter: 5.1"Blades: 3Pitch: 4.77"Material: PCProp Disk Diameter: 129.5mmCenter Thickness: 7mmMax-Prop Width: 14.08mmWeight: 4.15gAdaptive Motor: 2205-2306Includes2 x CW Gemfan Hurricane Durable 51477 Blade Propeller2 x CCW Gemfan Hurricane Durable 51477 3-Blade Propeller