Pregnant Belly Button Ring - Perfect for Pregnancy You will Receive a 14g 2" PTFE Shaft along with 2 stainless surgical steel 6mm Balls. You can cut the 2" Shaft to length or you can wear it like in the picture. The Shaft is Self Threading. Meaning you actually thread the shaft the first time you screw on Steel balls. The length can be adjusted to tit perfectly and remain comfortable during pregnancy.