I bought one and never got to use it. When I was tightening it down the end of the lever where the screw, screws into broke off. Of course I might have done something wrong, by over tightening it......but there seems to be a less than forgiving quality about the lever concerning tightening. I might try to get a new one, but you have to take a picture of it and send that in before anything happens one way or the other. The whole thing seems like a hassle, I'll probably just eat the $20.