Eyepiece 37-42mm & Objective lens 55-59mm

They fit my scope perfectly and work as intended. Work just as good as the high dollar ones, that being said I can remember when other brands were cheaper when they started off. Can’t go wrong.

fits great, snaps closed, feels like it'll stand up to hunting more than a single season like the Butler Creek covers did. Would recommend

These are the best built , best fitting caps i have ever owned .

Good product...objective is solid and tight. Ocular cap is loose and slides when opening...they close securely so may loosen up some. I have removed and cleaned it and ocular surface with alcohol to remove any film or dust...to see if would get more secure. Still working...might rough it up some on inside of rubber sleeve or try to clean with acetone to see if better surface contact. Otherwise are outstanding in function and ability to seal.

Once the optic was installed on my rifle, these easily slid on and stay on. They are easy to open and close and haven't popped open on their own when I didn't want them to.It isn't really a negative, but two notes from my experience:1.) If you will be shooting with others or sometimes wear glasses and sometimes don't, adjusting the optic focus ring is annoying with these on. You have to remove the flip it, make your adjustment, then reinstall. Once you dial your optic in if you're not sharing a rifle or have variable vision situations like glasses / no glasses this won't impact you.2.) There is a mechanical first stop on the flip it that faces you so it stops at 180 degrees (straight up) instead of 270 degrees (laying on top of the optic). I don't understand why you would want the 180 stop, and the front cover does not have this. The first time I used them I didn't realize you could push past the 180 degrees and didn't want to force it, so it kept hitting the bill of my hat when I would shoot. This is not an issue now that I've discovered you can simply snap it to the next setting and it will be out of the way but is a weird design IMO.Overall they are easy to install and use, do their job, and look cool. Five stars in my book.

These caps are 1000% more robust then a butler creek scoop cap. the build quality is amazing. I was only going to give this a 4 star but i changed my mind while writing this. my issue is really more of a pet peeve than anything. this cap has a rubber boot that holds it to the diopter (which is a really good idea as it really holds on). when trying to rotate the diopter the rubber torques but not the diopter since the rubber is holding the more of the tube then the diopter ring. so when rotating it the cap come off the end of the diopter a bit. it does snap back when you let go. you just have to make more of an effort to rotate the diopter then on say a butler creek

I have a Arken SH – 4J GEN2 6-24x50mm Scope and they fit perfect and protect my scope glass Awesome.

Just as described, quick shipping