Spiral flutes for creating threads in blind holes * Spiral flute tap pulls chips back from the tip of the tool and out of the hole to prevent clogging * Gold oxide finish reduces grinding stress within the tool * Powdered-metal steel for performance approaching that of solid carbide tools, with the toughness and shock-resistance of high-speed steel * Modified bottoming chamfer has additional length to reduce chip load, add tool life, and permit higher tapping speeds