Manufacturer Description

This is a 11x8 Electric Pusher Propeller
from Advanced Precision Composites.
For use on electric powered aircraft only, not for glow powered engines.

FEATURES:
Constructed of Gray composite material
Five adapter rings that adapt to different motor shafts

INCLUDES:
11x8EP Thin Electric Pusher Propeller, two adapter rings and
    instruction sheet

REQUIRES:
Assembly onto motor shaft or gear drive unit in electric plane

SPECS:
Diameter: 11"
Pitch: 8
Hub inner diameter: 0.375" (9.5mm) where rings are installed
Inner Diameter of Rings: 0.128" (3.25mm), 0.158" (4mm), 0.197" (5mm)
0.237" (6mm) and 0.313" (7.95mm)

BOX DIMENSIONS: 2.25" W. X .63" H. X 12.50" L.
BOX WEIGHT: .07 LBS.