Miller® Smith® MC-13 Series Size 3 One-Piece Acetylene Gouging Tip. Special purpose tip best used for edge preparation, removal of welds or gouging cracked metals. This 1-piece tip has gouging capacity of 3/8" (10 mm) wide and 1/4" (6 mm) deep. Compatible with cutting attachments AC309, MC500 Series and Toughcut™ CC509P.