Apc Prop 7X4 Electric

This is a 7x4E Thin Propeller from Advanced Precision Composites.
For use on electric powered aircraft only (not for glow engines).
FEATURES
Gray composite construction
Comes with two adapter rings that adapt to different motor shafts

SPECIFICATIONS
Diameter: 7"
Pitch: 4
Hub inner diameter: 0.25" (6.3mm)