Notes from our tech department:
This is a Two-Blade Aluminum Spinner w/Aluminum Backplate from Great Planes.
Machined For Accuracy, Then Polished To A Gleaming Finish.
Easy To Install, Having A Bolt-On Design, Centers Each Spinner
Perfectly 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 Different Engine Sizes Are Available Separately.
One Aluminum Spinner Cone
One Aluminum Backplate (See Specs For Sizes)
One 10-32 x 1-1/2" Mounting Bolt
One Box with Installation Instructions and Safety Tips
One Spinner Adapter Kit (See COMMENTS)
Spinner Backplate Diameter: 3" (76mm)
Spinner Backplate Mounting Ring Thickness: 3/16" (4mm)
Spinner Backplate Hole Diameter: 3/8" (9.5mm)
(The Adapter Kit Will Contain An Aluminum Bushing To Fit The
Length From Back Of Backplate To Front Of Cone: 3" (76mm)
Height Of Propeller Slot: 13/16" (21mm)
Length Of Propeller Slot: 1-1/16" (27mm)