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Bahtinov Focusing Mask - Front Diameter 55-90mm (2.2inch - 3.6inch)

For Telescopes Dew Shield and Camera Lenses or Refractors with few shield or front opening From 55-90mm (2.2inch - 3.6inch). This is not lens size. It is the diameter of front housing like dew shield or lens hood.

The one in photos has a brown sticker on top to protect the mask.

The material is strong black plastic.

It comes with 3 repositionable screws with silicone sheet to protect the lens or telescope.

I use USA to ship within USA only.

Filed under: Eyepieces & Accessories