these coupling tapers pins are made of stainless steel and used to stretch your piercing to the gauge of the taper. the pin fits into any internally threaded body jewelry and assists in inserting your new jewelry of the same gauge as the taper into your piercing. these tapers can be autoclaved and reused. Gauge=00ga,0ga,2ga,4ga,6ga,8ga,10ga,12ga,14ga,16ga,18ga
