2x barlow offer a high quality observation without introducing additional chromatic aberration. Chromatic corrected; provide high transmittance; ensure clear; sharp views.
 
Double the magnification of each eyepiece you own with the 2X Barlow Lens
Keep the eye relief of your eyepieces while getting 2X the power
Slides into 1.25 inch focuses and diagonals and accepts 1.25 inch eyepieces
Fully multicoated optics with blackened edges for good light transmission and minimal reflections