I had the same experience as MikeR51 below. He could have written my review, I could have written his. I didn't crank on it or anything like that. Just broke and the knob came apart in my hand.
Pros: Squat size for my spotting scope
Cons: I think it was cheaply made and it broke
This review was written in the old system and had content requirements that are different than reviews written today.