American Carbide Tool Carbide-Tipped Tool Bit for Straight Turning, Left Hand, C6 Grade, 0.4375" Square Shank, AL 7 Size AL-style tool shape has a 0-degree side cutting angle for straight turning, facing, or boring to a square shoulder C6 grade uncoated carbide tip for general-purpose machining of steel and steel alloys Left-hand cutting direction for left-to-right feed Positive rake angle provides a sharp edge for making continuous cuts Square steel shank fits square toolholders