Check out this internally threaded belly ring with a drop charm drill hole , so you can add a 0.9mm thread top, making it ideal to make a unique design or use up slow selling stock.
Internally threaded
5mm and 8mm CZ , charm size 4mm
Drill hole 0.9mm ( 16g)
Length curve 10mm
Gauge Curve 14g
Sold in singles
Material - ASTM F136 titanium