I use this mostly for my screen Eiger Aufsteckblitze with 105cm screens, but it fixed already reflectors (with additional Superclamp) or smaller softboxes.
The workmanship is very good and the adjusting lever works very well. Just a little turn, adjust inclination, turning back and everything fits.
In the styles of my screens I glued a pencil, so prevents the style is pressed by the fixing screw