Coated Piercing Needles - Our Precision coated piercing needles are pre-sterilized with Ethylene Oxide gas and individually packaged for single use. Each needle is heat-coated with DuPont DryFilm coating, which is widely-accepted as the standard for coated piercing needles and staples in the medical industry. The coating eliminates the need for any additional lubrication during the piercing process. Our Precision coated piercing needles are currently available in sizes 18g - 14g.