This is the replacement Prop Adapter for the 42mm 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 5/16-24
Four 3x10mm Cap Head Screws

Specifications

Length: 1.48" (38mm) overall 1.18" (30mm) shaft only
Diameter: .31" (8mm)
Thread: 5/16" -24 kpm02/20/2007
Mounting: 19mm (ctr-ctr opposite) ir/jxs