High Five! These 316L Surgical Steel Animal Paw Prints for internally threaded shafts are super cute! Oxidised to highlight the foot pads. This attachment is for internal threaded shafts measuring 1.2mm. Paw Print has a 5mm diameter at its widest point. The attachments actually have the standard 0.9mm thread. These attachments will fit internal thread Labrets, Barbells, Curved Bars, etc. Oxidised effect item should not be brought into contact with solvents such as alcohol.