(+) Nice look
(+/-) = Pure material plastic (but can not rust / greater harm in "contact")
(+) Wide holes
(+) Simple assembly
(+/-) Screws were also there, but unfortunately have not fit (too small thread).
(+) Packing (signs are well packaged, each in a separate plastic bag protected from scratches)
Note: The holder consists in each case of two parts, a main part and a small bar, which is pressed down by plate mounting. Both parts are supplied as a part of the plastic part. You just have to separate the bar (a plastic injection mold), as you would vll knows the model (small spacers simply unscrew, if necessary, re-grinding with a fine arrows - was with me but not necessary).
Conclusion: Buy recommendation!