HD/DD 7x3.5 Propeller. This is prop we recommend for the MiniFly with our 10g outrunner.
GWS Direct Drive series props offer high efficiency and great value for
your electric powered models. The center hole of the prop is designed
for a 3mm shaft, and can be drilled out for a 1/8" (3.17mm) shaft.
According to the widely accepted Maximum RPM formula of 100,000/D for
GWS DD series props, the 7x3.5 DD prop should not be used over 14,285