***** **********Best Quality Guranteed. *****Waterproof Argon Purge***** 1.25" Barrel*****Ultra-Wide Eyepieces - Comfort, Quality, Value. *****When you relax your eyes and take in the scene presented before you, it is much easier to observe for longer periods of time, and details begin to materialize that may not have become apparent to you at first glance. *****Another great benefit of ultra-wide eyepieces is the ease with which you can gaze, not directly at an object, but slightly to either side