SVBONY SV137 1.25-Inch 3x Barlow Lens Metal Body Fully Multi-coated Internal Brass Ring

This 3x Barlow lens with metal body. The lens fully multi-coated provide a sharp ” escope eyepiece. Ideal for high power observation. A brass compression ring can protect your eyepiece from marring or scratching the

Features：

1.2-Element optics are fully multi-coated

” barrel will fit in standard 1.25” focusers and diagonals
" eyepiece inside for eliminates marks on your eyepiece barrel

Note:

Insert Barlow Lens between your eyepiece and your escope to get the magnification instantly. Eye relief is the distance your eye has to be from the first lens in the eyepiece in order to see the full field of view. When you use a Barlow lens with an eyepiece, you get the magnification, but the eye relief is not affected. This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have.

The 1.25” barrel will fit in standard 1.25” focusers and diagonals

Brass press ring

Prevent the outer wall of the inserted accessory from being acratched.

2-Element optics are fully multi-coated

FMC coating can effectively improve the transmittance of light; ensure clear vision and sharp image

The Edges of the lenses are blackened to cut down on internal reflections

How to use it?