Attributes . Patented Maxtrac(R) Heavy-duty Cast Aluminium Wire Drive System Provides Reliable Feeding and Durability. Brass-to-brass Gun Connections for Better Electrical Conductivity That Results in Better Arc Performance. Totally Tool-less Drive Rolls and Wire Guide Installation. Four Geardriven Wire Drive Rolls Slide on and Off Easily! Calibrated Wire Feed Speed Dial for Precise and Accurate Settings. . Names