My door hinge is around 8.5mm-9mm so it shld fit ok with this stopper. somehow might be it's a mass product, mft don't cut standard/perfect clean circle at the hole, couple of them gave us some problem. luckily I ordered enough. For 90 degree, I need to screw the pin all the way at the very end, it still function, just hope it won't fall out after time. I should ask for the angle for this hinge pin stop first.