This jewelled curved rose gold barbell is 1.6mm (or 14 gauge) thick with available lengths of 6,8,10,12 or 14mm and ball sizes of 4mm, 5mm or 6mm. It is available with 2 gem balls (double jewelled) or 1 gem ball and one plain ball (single jewelled). The length measurement is taken in a straight line in between the 2 balls if you are unsure how to take this measurement please do have a look at our measuring guide.