Drill America Twist Drill Bit Set 9/16 In Cobalt Reduced Shank Heavy Duty 5 Pcs

Drill America D/ACO Cobalt Reduced Shank Drill Bit. D/ACO cobalt drill bits are made of heat resistant M42 cobalt. They are ground to a heavy-duty 135 split point. They are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys.

• Sizes included are 9/16 in., 5/8 in., 3/4 in., 7/8 in. and 1 in. with 1/2 in. reduced shanks
• Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

• Display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel
• Manufactured to National Aerospace standard 907

• 135 split point is self-centering and reduces thrust
• All drills have 3 in. flute length and 6 in. overall length for minimal adjustment during tool changes

• Expand the size range capacity of a portable drill chuck
• Sizes (in.): 9/16, 5/8, 3/4, 7/8 & 1 with 1/2 in. reduced shanks

• For tough, high tensile strength materials like stainless steel
• 135° split point tip prevents drill from walking