This is a wonderful hook.
The 2 1/4" dia. ceramic knob is large enough that it won't form unsightly dimples in expensive fabric. However, should you still want the dimples, there are two smaller hooks that project at 45° from each lower side of the backplate.
Polished cast brass, with a knob projection of 1 7/8". Mounts using two #6 screws (not included).