GSO's 1.25" 2x achromatic Barlow increases the magnification of each eyepiece and effectively doubles or triples the number of eyepieces at your disposal
Full unit increases magnification of eyepiece by 2x
Barlow element can be separated from main tube and threaded directly into a 1.25" eyepiece for approximately 1.5x increase in magnification
Low "shorty" profile maintains a comfortable viewing position
Two-element, fully-multicoated lenses with excellent color correction, sharpness, and image brightness