I bought this eyepiece to go on my vx-3 2.5-8x scope. The eyepiece is very well made and solid as a rock in comparison to other lens covers. It was very easy to install, however, I did need to remove the rubber eyepiece guard to get it to stay on. The rubber guard is threaded, but the lens cover will pop off while shooting. The easy fix is to just remove the rubber and screw it directly into the scope eyepiece. This lens cover creates a very nice seal, is quiet and smooth opening.
This review was written in the old system and had content requirements that are different than reviews written today.