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!
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!