Gemfan Thomas 5127.9-3 are 5" tri-blade polycarbonate propellers with a low 2.79" pitch, developed in cooperation with Australian racer Thomas Bitmatta for racing FPV drones. The patented profile with a matte leading edge and smooth trailing edge increases both thrust and efficiency by approximately 5% at full throttle, while the low pitch delivers smooth throttle response and predictable cornering, making these propellers suitable for everyday track practice. The manufacturer recommends them for 2207 size motors and drones with a takeoff weight of up to 500 g.