This is the replacement Prop Adapter for the 50mm Diameter
Great Planes RimFire Brushless Motors.

Features

Aluminum construction, Silver in color
Replaces a worn or damaged prop adapter

Includes

One Prop Adapter
One Prop Washer
One Prop Nut

Requires

Four 3x10mm Cap Head Screws to mount the adapter to the motor can
(salvage screws from old prop adapter)

Specifications

Length: 1.80" (45.6mm) overall 1.41" (36mm) shaft only
Diameter: .37" (9.5mm)
Thread: 3/8 x 24