I have a Concord folding handlebar basket that has terrible mounting hardware. This build pushes the basket farther out away from the handlebars and is way easier to connect. No screws are needed, but have included holes for M3x16 and M3x30 screws (2 each). You can just get a nut on the end if you want but probably not needed as the screw will be threading the plastic as you screw it in.

There are two versions of the part that goes around the handlebar and the one with the larger screw mount recession goes on the bottom; this allows the crossbar to snap into it. I've found it is easiest to angle the top/bottom handle bar pieces against the hook end and push them down to snap under the latch. You can see this in one of the images where it is at an angle. This also allows you to alligator chomp onto the handlebar before attaching the crossbar.

Hope someone finds this useful and happy riding.