This is the APC Propellers Bullnose Electric Drone Racing Bundle 4X3.3.
Features: Long fiber composite construction, gray in color
Requires: All props require balancing, this is very important and may need prop reamer
Note: For use with electric motors only. Do not use with gasoline or glow-powered engines.
Hub Diameter: 0.50" (12.7mm)
Hub Thickness: 0.26" (6.6mm)
Shaft Diameter: 1/4" (6.3mm)
Weight: 0.11oz (3.1g)