Description: 5X magnification with 1.25 inch interface increases the magnification of any 1.25 inch eyepiece and also can provide comfortable viewing. It allows you look more closely and more detailed at the moon's surface and other planet. Multi coated optical lens offers a high quality observation without additional additional chromatic aberration, and making image more clear and sharp. 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. Specification: Interface: Approx. 1.25 inch (31.7mm) Magnification Factor: 5X Material: Metal + Optical Glass Color: Black Weight:3.0oz(85g) Total Height: 78mm Package Includes: 1 Piece 5X Barlow Lens