18ct Yellow Gold Internally Threaded Prong Set Jewelled Flower Thread : For Internally Threaded Jewellery with a 1.6mm (14ga) Stem Thickness Top Size : 5mm
14ct Yellow Gold Internally Threaded Prong Set Jewelled Attachment Thread : For Internally Threaded Jewellery with a 1.6mm (14ga) Stem Thickness Top Size : 1.5mm