Really really cheapo product - Butler Creek Flip-Open Objective Scope Covers

Okay, so the price is cheap, so for the money you don't get ripped off. The problem is that they are just cheaply made chunks of plastic. Butler Creek has clearly gone down in quality over the past couple of years, very disappointing. These are not perfectly round, so if you want to keep out moisture, use a generous amount of thread locker. And you most likely will still get moisture on a rainy day coming in through the cap. It's unfortunate that Butler Creek is the only option for those who want to protect their expensive glass. Surely someone will come along and create a higher quality level of protection, for which I would gladly pay extra cash. I can't in good conscience recommend these, they are barely functional.