This is the Great Planes ElectriFly Collet Cone Adapter 1.5mm-3mm.

Features

Aluminum construction, silver in color
Mounts on electric motors with a 1.5mm shaft and adapts them to a
3mm diameter prop shaft
Cone shaped spinner nut adds good looks

Includes

One 3mm Prop Shaft
One Aluminum Knurled Prop Hub
One Aluminum Prop Washer
One Aluminum Spinner Nut (3mm threaded)

Requires

Installation

Specifications

Length: 1.20" (30.5mm) as assembled
Length: 0.83" (21.3mm) shaft only
Length: .71" (18mm) spinner nut only
Shaft Diameter: 3mm
Spinner Nut Diameter: .31" (8mm) at the widest point

Comments

For the version without a spinner nut order GPMQ4950.