All our parts are factory approved and suitable for proper installation
-38x4mm means diameter 38mm, aperture 4mm
Specification:
-Item name: 2-blade Nylon Propeller
-Material: Nylon
-Size: Diameter 38mm: Center Aperture 4mm, Pitch 40mm
Diameter 40mm: Center Aperture 4mm, Pitch 40mm
Diameter 45mm: Center Aperture 4mm, Pitch 40mm
Diameter 47mm: Center Aperture 4mm, Pitch 40mm
Package included:
8pcs x propeller