Pro-Shot's exclusive & proprietary design two step coated cleaning rod provides your barrel maximum protection. All the benefits of our HEAT TREATED- CENTERLESS GROUND- MICRO-POLISHED- MIRROR POLISHED Stainless rod with the addition of our Pro-Tuff Coating (PTC) heat and chemical resistant Proprietary Coating. PROPRIETARY PRO-TUFF COATED RODS HAVE A BUILT IN COATING TO THE ROD ITSELF ALONG WITH EXCLUSIVE (PTC), MAKING THEM A SUPERIOR DOUBLE COATED CLEANING ROD.