***** **********Best Quality Guranteed. *****5x magnification; high power magnification for any 1.25 '' eyepiece; double the capacity of an existing set eyepieces at the cost of a single eyepiece*****Bright and clear view; fully multi coated broadband coating optical lens allows look more closely and more detailed at the moon's surface and other planet clearly*****The apochromatic barlow lens provide high power magnification allow looking more closely and more detailed at the moon's surface and other planet*****The lens edges and inner barrel is blackened to provide maximum contrast; chromatic corrected; provide high transmittance; ensure clear and sharp images*****Male T-thread on its back that can attach DSLR camera and other T thread type accessories; it accepts 1.25" filters; just remove the optical glass part and add the filter on if need