Cleveland C70367 115 Piece M42 Cobalt Heavy Duty Jobber Length Drill Bit Set, Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degrees Split Point, 1/16" to 1/2", A to Z and #1 to #60 Size

Cleveland M42 cobalt heavy duty jobber length drill bit set. Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools. High red hardness for extended wear life in high heat conditions. Applicable for aluminum, copper alloys, inconel, titanium alloys, tool steel, die steel, structural steel and precip-hard stainless.

• Set of 115 heavy duty jobber length drill bits includes sizes 1/16" to 1/2" in 1/64" increments, sizes A to Z, and sizes #1 to #60
• Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
• Gold oxide finish lubricates the drill bit and provides wear resistance
• Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
• Meets ANSI and NAS 907 specifications
• Made in the USA