Easy to use, stable, well built, attaches well. Not perfectly polished/smooth looking finish on the hook part, but good enough. Feels slightly rubbery, but hard to the touch. Top clamp soft "foam" part may leave a tiny bit of residue, if the holder is removed after a long time, which is quickly and easily cleaned off a smooth desk surface with a slightly moist tissue. Bottom plastic clamping circle looks like it has a slightly rough surface, but is smooth to the touch.