I used rubber objects before but I could not quite get rid of a rubbery smell like a headache. It was newly needed this time, I chose metal objects without hesitation. In the past, there was no sense of incongruity because the wheel stopper equivalent to this thing was contained in the in-vehicle tool. Although it is a folding type made of metal, there is no casual feeling and it is firm. Just a bit newer so it is a bit tight, so do not pinch your fingers when folding.