Chicago-Latrobe 550 115-Piece Heavy-Duty Cobalt Steel Jobber Drill Bit Set
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Category: chicago latrobe

About this item
- Number of Tools: 115
- Heavy duty construction for increased strength and rigidity compared to standard drill bits
- Manufactured to NAS 907 Type J geometry aerospace specifications with self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging and gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
- Sizes in Set: 1/16 - 1/2 x 64ths; #1 - #60; A - Z
- Cobalt steel tools contain a higher amount of cobalt compared to high-speed steel tools, resulting in enhanced performance for cutting tougher metals like stainless steel and nickel alloys.