316L surgical stainless steel nipple bar featuring two snakes twisted around each other. This high quality nipple clicker features a hinge on one side for ease of fitting. To open, gently pull the non-hinged end of the horizontal bar upwards. Push the bar through your piercing and then gently snap the end back down to close. The hinged barbell on this nipple clicker has a gauge of 1.6mm and is available in size 13mm.