Product DescriptionHigh-performance 9 step step drill bit covering increments from ¼″ to ¾″, made from cobalt steel for durability with hard metals and sheet materials. Features fast spiral flutes to clear chips efficiently and maintain cool operation, along with a ¼″ hex shank that fits impact drivers and standard drills alike. Ideal for precision drilling in stainless steel, fiberglass, aluminum, and other demanding substrates where smooth entry and consistent hole sizing are critical.