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Maintenance-Length Drill Bits

Maintenance-Length Drill Bits

Also called mechanics-length drill bits, maintenance-length drill bits are slightly shorter than the standard jobbers-length drill bit, providing better rigidity but less drilling depth.

General Purpose High Speed Steel

The most common choice for general purpose drilling applications, high speed steel drill bits are compatible with a range of materials, including soft steels, carbon steels, wood, and plastic.

Black & gold oxide coating increases wear resistance for extended tool life and helps retain lubricants, improving chip flow and drilling performance. This coating is recommended when drilling ferrous metals and should not be used on nonferrous metals.

Spiral, 135 ° Split Point

Black & Gold Oxide — High Speed Steel

Inch with 3-Flat Shank

Left-Hand Heavy Duty Cobalt Steel

Designed with cutting edges and flutes facing the non-traditional direction, left-hand drill bits are suitable for use in screw machine operations, in clockwise rotating spindles, or in place of a screw extractor for removing broken bolts or screws from a workpiece. Cobalt steel drill bits are harder than high speed steel and are more wear resistant at higher speeds. They are suitable for drilling into hard materials such as hard steels, stainless steel, titanium alloys, and nickel alloys.

Black & gold oxide coating increases wear resistance for extended tool life and helps retain lubricants, improving chip flow and drilling performance. This coating is recommended when drilling ferrous metals and should not be used on nonferrous metals.

Spiral, 135 ° Split Point

Black & Gold Oxide — Cobalt Steel

Inch with Round Shank

Sets

These sets contain drill bits in a range of sizes for creating holes with different diameters.

Black & Gold Oxide Coated High Speed Steel

Parabolic Flutes, 135 ° Split Point

Inch

Spiral, 135 ° Split Point

Inch