*A dainty 14 karat solid gold, this single piercing can stay in your ear always, even when you are in the water. *Internally threaded solid 14 karat gold stud piercing. Suitable for ear lobes, helix, cartilage, tragus and daith. *Bow stud motif is 7.5mm. Gauge (thickness) 18G (1.0mm). Flat disc style earring back, suitable for pierced ears. *8mm (internally threaded flat back) *Please note this is a single earring only. *last photo for size this is for the smaller micro one circled in red.