High-speed steel (HSS) provides hardness for wear resistance
Black and gold oxide finish resists corrosion and increases the hardness of the drill bit
Self-centering 135-degree split tip easily enters tough substances without the need for a pilot hole, generating minimal chips that help prevent clogging.
Assortment of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments