This is a Spinner Adapter Kit by Great Planes.

FEATURES: Adapter kit for aluminum spinners
          This steel adapter kit tightens the backplate & propeller onto the
            engine, then using a single bolt-on design, holds & centers each
            spinner perfectly on its baseplate.
          Machined for accuracy
          This spinner adapter kit will fit the following engines:
            -O.S. FS 70-120 Surpass
            -O.S. 1.40 RX
            **Does not fit the OS FS-70 Ultimate or the FL70**
          One year quality guarantee
          Installation instructions provided on the header card

INCLUDES: (1) Propeller Nut
          (1) Propeller Jam Nut
          (1) Propeller Washer
          (1) Aluminum Backplate Bushing

REQUIRES: 12mm Wrench To Tighten Propeller Nut
          Aluminum Spinner w/Center Mounting Hole
          10-32 Bolt

SPECS:    Shaft Size:       5/16-24
          Jam Nut Length:   1"     (25mm)
          Backplate Bushing Inner Diameter: 5/16"
                            Outer Diameter:  3/8"

COMMENTS: The correct adapter for a FS-70 Ultimate and FL70 is GPMQ4585.

                                                                    JAL 4/20/99
                                                                          ir/jl
                                                                      kr3/20/03