by Milwaukee
Buy new: $4.45
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Milwaukee's Titanium Coated, Thunderbolt Jobbers Length twist drill bits are designed for performance in low to high tensile strength materials, stainless steel and cast iron. This super hard Titanium Nitride surface treatment increases drill life up to 500% over uncoated drill bits. Thunderbolt twist drill bits are made from premium industrial grade steel with heavy duty cutting surfaces that powers through deep or shallow holes with lightning speed. A unique flute form is used for greater chip ejection and improves coolant to the drill point. Thunderbolt twist drill bits have a self-centering 135 degree split point which reduces walking at the drill point. One per package.
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