Great Planes Adapter Kit ST S-2500-4500

This is a Spinner Adapter Set by Great Planes.

FEATURES:
Adapter set for aluminum spinners.
This steel adapter set tightens up the backplate & propeller onto the
    engine, then utilizing a single bolt-on design, holds & centers each
    spinner perfectly on its baseplate.
Machined for accuracy.
This spinner adapter set will fit the following engines:
    -SuperTigre S2500-4500
    -Saito FA-300 Twins
One year quality guarantee.
Detailed guideline printed on the header card.

INCLUDES:
(1) Prop Nut
(1) Prop Washer

NEEDS:
14mm Wrench To Tighten Prop Nut
An Aluminum Spinner w/Center Mounting Hole
10-32 Bolt

SPECS:
Shaft Size: M10-1.25
Prop Nut Length: 1-1/2" (38mm)

REMARKS:
Aluminum backplate bushing is not needed with this engine.