16 gauge is the size of the opening of 1.291millimeters. It's a common size for eyebrow and ear piercings, nipple and lip piercings and tongue piercing. If you want to have an opening of small pretty size 16 gauge jewelry is what you need- it's not too small and looks elegant. We offer you 16 ga spiky tongue rings, atom tongue barbells, clear tongue rings, black tongue barbells and other high quality piercing jewelry for your tongue.