Blue Demon ACGE-CC-14 1/4" X 12" Copper Coated Gouging Carbon， 50-Piece</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Copper coating improves conductivity offering more efficient and cooler operation</li><li>An electric arc is created which melts away the metal， uses compressed air to blow the molten metal out of the groove</li><li>Typical chemistry， 80% graphite and 20% copper</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41A%2BAJ1cyNL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51dbhtOs7dL.jpg' noproxy></br>