I don't know how wide the hook is, but I need something that is about 1/4" wide.
The hook is close to 3 inches wide.
These hooks will fit over doors that are 1 1/2 inches wide.
The small hook is 1.5 inches over door coverage.
Will two of the hangers have a jewelry organizers over the door?
If you hang your jewelry organizers using two of the hooks, they can hold 30 lbs each, which is 15 lbs more than you'd get if you only hung them through one of the holes.
Where are these manufactured?
The product was designed and is manufactured in the U.S. and is sold in China.
Is it possible that this could hold a dart board?
If the hooks are hanging over the top of a door, and the dart board has a string or wire on the back, it could hang from one or two of the hooks, but the hooks themselves protrude out more than an inch, which would make the dart.