This cymbal arm has so many features, you can´t even think of all these.
The grapper clamp can grab pipes with a hickness of 2 inches. I´ve never seen such thick pipes like that. Also there is the really great Swing Nut by Gibraltar who works really fast, I Think two times faster than with the normal wings crew.
Incidentally there is an Instruction in the package who tells how the Swing Nut works, but I don´t think that this is really important because the Swing is so easy to use.
In the end there is the 2 times secured cymbal mounting, One Time normally and another time with a drumkeyscrew and even with a lot of violence it´s nnot possible to move the cymbal-mounting if he´s secured these 2 times.
And the felts, the sleeves and the washers are really a good quality.
I hope I helped you in your decision.