This is a 11x7E Thin Composite propeller from Advanced Precision Composites.
For use on Electric powered aircraft only (not for glow engines).
Gray composite propeller blades that assemble onto a propeller hub.
Comes with five adapter rings that adapt to different motor shafts.
Comes in a bag attached to a header card.
One composite propeller
Five composite adapter rings
ALL props require balancing, this is VERY important.
May need prop reamer
Hub inner diameter: 0.25"