Carbon fiber propellers from "Biela" with a great quality to price ratio. They come factory-balanced and certified to not exceed 8000 rpm. Those propellers are lightweight and very stiff with low level of noise. Center (mounting) part is reinforced with wooden block.

Technical data:
Type:	4 blade semiscale
Diameter:	22"
Pitch:	10"
Weight (abt.):	350 g
Hub bore diameter:	10 mm
Propeller hub thickness:	28,5 mm
Max. RPM:	8.000
Application:	gas and electro engine
Recommended for engine (cm³):	70