OAKRIDGE PRODUCTS 1 Quart Size (Pack of 3) | Sharps Container with Flip Lid | for Diabetics

Is there a wall mount bracket for this?

How many 1ml diabetic needles does each container hold?

I was looking to order a three pack instead of just one does this have the needle unThread device built in?

I was testing the lid to see how it worked and now I can’t get the slide door open again. Is there a way to reopen it without breaking it?