The Aluminium Titanium Nitride Butt-Seamer to be more precise. Dubbed the "Graphite 70" because of the dark composition of its scientifically hardened parts, the newest version of the 70-D3B-2 is more durable and corrosion resistant. Applied by physical vapor deposition, "AlTiN" is a unique coating that adds hardness and reduces friction without adding mass (try one micron on for size), making the new 70-D3B-2 the smoothest operating butt-seamer we've ever created. On display at Texprocess June 2013.