ASHATA Barlow Lens 3X, 1.25 Inch Fully Multi-Coated Optical Glass + Metal Barlow Lens for Telescope Eyepiece for a Sharp, Crisp ar Image

3X magnification with a 1.25-inch interface increases the magnification of any 1.25-inch eyepiece, also offers a comfortable viewing effect. 3X High power magnification: more detailed at the star, moon and other celestial bodies. Fully multi-coated optical lens: high transmittance to achive clear and sharp views. Providing more magnification without reducing the exit hole on the eyepiece and keeping a comfortable observation with wide view. Easy to use: simply insert the eyepiece into Barlow lens, and then insert the Barlow lens into the scope.