The Steel Rose Flower is for internal threaded shafts measuring 1.2mm. The attachments actually have the standard 0.9mm thread. These attachments will fit internal thread Labrets, Barbells, Curved Bars, etc. Available in surgical steel and rose gold coated rose gold steel. Maximum width is 6.6mm. The Rose Flower Top is an Oxidised effect item should not be brought into contact with solvents such as alcohol.