I talked two of my buddies into buying them after seeing mine. They too had gone thru a half dozen pairs of cheapos. I told one of them today in an email about my call to them. He said funny you should mention them. One of the jerk drunks at his hunting club grabbed his and tried to force the twist out cups the wrong way and broke it. He called to buy replacements and told the girl a jerk had man handled them. The girl said, I don't care what happened to them. Give me your address and I'll get a set out to you today. No charge of course.