Great Planes Spinner 1-3/4" Aluminum

This is a Two-Blade Aluminum Spinner w/Aluminum Backplate from Great Planes.

FEATURES:
Machined For Accuracy, Then Polished To A Gleaming Finish.
Easy To Set up, Having A Bolt-On Design, Centers Each Spinner
    Completely On Its Baseplate.
Spinner Cone Is Recessed To Mate Into the Spinner Backplate. The Rear
    Of The Spinner Is Flat, Without An Overhanging Cone.
Includes Black 10-32 Bolt That Holds Spinner Cone to Backplate.
Adapter Kits For Various Engine Sizes Are Available Separately.
    (See REMARKS)

CONSISTS OF:
One Aluminum Spinner Cone
One Aluminum Backplate (See Specifications For Sizes)
One 10-32 x 1" Installing Bolt
One Box with Setup Guidelines and Security Tips

REQUIRES:
One Spinner Adapter Package (See REMARKS)

SPECIFICATIONS:
Spinner Backplate Diameter: 1-3/4" (44mm)
Spinner Backplate Installing Ring Thickness: 3/16" (4mm)
Spinner Backplate Hole Diameter: 3/8" (9.5mm)
    (The Adapter Package Will Contain An Aluminum Bushing To Fit The
Crankshaft Size.)
Length From Back Of Backplate To Front Of Cone: 2" (51mm)
Height Of Propeller Slot: 9/16" (14.5mm)
Length Of Propeller Slot: 5/8" (15.5mm)

REMARKS:
Caution: Failure To Follow The Recommendations Printed On The Box May
    Cause The Propeller To Different From The Model.
If The Spinner Cone Touches The Propeller At Any Point, Usage A File
    Or MotoTool To Relieve This Area.
Spinner Adapter Package To Utilize Will Be Determined By Engine Crankshaft
    Size. Usage One Of The Following:
    GPMQ4581 - OS Max 20-40 FP, 25-45 FX & SF (1/4")
    GPMQ4584 - OS Max 60 FP, 61 FX & SF, SuperTigre 61 (5/16")
    GPMQ4585 - OS Max FS 26-52 Go beyond (1/4")
    GPMQ4588 - OS Max FS 70-120 Go beyond, 140 RX (5/16")
    GPMQ4589 - OS Max 1.08 FSR (3/8")
    GPMQ4590 - SuperTigre S 2500-4500 (10mm)