This is a 6x4E Thin Composite propeller from Advanced Precision Composites. For use on Electric powered aircraft only (not for glow engines).
FEATURES: Gray composite propeller blades that assemble onto a propeller hub. Comes with two adapter rings that adapt to different motor shafts. Comes in a bag attached to a header card.
INCLUDES: One composite propeller Two composite adapter rings One instruction sheet
REQUIRES: Assembly onto motor or gear drive unit in your Electric plane. Balancing
SPECS: Diameter: 6" Pitch: 4 Hub inner diameter: 0.25"
COMMENTS: Use Speed 400 Electric motors.