This is an 18x10 Composite Propeller from APC.

FEATURES
APC props are manufactured using a pultrusion process. This method
causes the fiberglass "fibers" to be oriented axially in 1/2" long
pellets, allowing for a higher fiber (60%) to resin (nylon binder)
density. Providing substantially higher strength and stiffness than
glass filled nylon.
The additional stiffness is beneficial to control of vibration
resonance response.
The higher strength allows the use of thinner cross-sections,
beneficial to weight and aerodynamic efficiency.
Competition proven.
Dark gray composite material.
Single piece propeller.

INCLUDES
One 18x10 APC Composite Propeller.

REQUIREMENTS
ALL props require balancing (use TOPQ5700).
May need prop reamer, use GPMQ5005 (SAE) or GPMQ5007 (Metric).
9/32" + 5/16" Tubing for Bushing

SPECIFICATIONS
Prop Diameter: 18"
Prop Pitch: 10
Hub Thickness: 0.40"
Hub Diameter: 0.8"
Weight: 0.047lbs
Engine Shaft Diameter: 1/4"