Multi coated optical lens offers a high quality observation without additional additional chromatic aberration, and making image more clear and sharp.
It is easy to use, simply insert the eyepiece into Barlow lens,keeps lens clear easily with 2 pairs of dust cover.
3X magnification with 1.25 inch interface doubles the magnification of any 1.25 inch eyepiece.
M42x0.75mm thread camera connect interface for telescope eyepieces.
1-Year warranty against manufacturing defects.

Package Include:
Barlow Lens 3X * 1 pcs