STUDEXEar Piercing Earrings Silver Stainless Mini 3mm Clear CZ Studs System 75 Hypoallergenic

One of my earring holes has closed up slightly.I just want a post with a larger diameter than norm, to open my hole larger for threaders. what to use?

Does it come with 2 earrings or just 1?

do you just put it ib your ear and it pearcis without the gun

Has anyone had any issues with the White cartridges getting stuck?