I used them on 2 of my Athlon helos 8-34-56. I am able to mark turret cover with white tape at 35-40-45-50-55 and so on fit perfectly and nice and tight
Here is an example of some turrets for customers I have done. I can make them for any scope. Currently working on the Element Helix. I also make Parallax Levers.
I'm guessing that these are.more for bench shooting? do they come off easily or are they snug? I wouldn't want to lose them out in the thickets and bushes around here hunting