This is a LED-light mounting bracket which fits the roll bar of the norwegian all-terrain wheelchair Terrengen. This mounting bracket is ment for the old type Hamron 24x3 W LED bar from Jula.
Use 2mm rubber gasket between the roll bar and the mounting bracket.
Make a M6x33,5mm pin for the hinge. I just cut a partial thread M6 bolt.
Use a M6x20mm and a M6x45mm bolt with washers and lock nuts to mount the bracket and the LED bar.