Contamination and Cross Contamination can occur when these detachable components or attachments come into contact with the reusable Ear Piercing Gun, including the combination of touching the non-sterile, reusable Ear Piercing Gun, and then touching the detachable components or attachments including any contact with the Ear,such as wiping the Ear with a cleaning prep pad and actually touching the Ear during the Ear Piercing Procedure.