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This 3.5"" End Cap fits the 3.5"" Feather Touch focusers for Stellarvue 85mm Field Flattener.

It is machined of the highest quality aluminum and finished in our shop, keeping the same beautiful look and high precision quality that Starlight Instruments is known for.


Known To Fit Stellarvue 85mm Field Flattener
Draw Tube Thread 4.125X24TPI
Use with FTF3500 Series
Other Info M85X1 Female Thread