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Metal Drilling
Twist Drill Bits
  • 48-89-2308 Primary Image
  • The Red Helix Cobalt drill bit offers increased durability and faster drilling. It provides up to 15 times longer life compared to black oxide drill bits. The image displays the drill bit actively cutting through metal, highlighting its robust and efficient performance qualities.
  • Cobalt Drill Bits are ideal for drilling various materials including wood, PVC, copper, aluminum, duct/sheet metal, angle iron, metal, cast iron, and stainless steel. They are compatible with all drill/drivers.
  • The 11/64 in. Cobalt Red Helix Drill Bit features a split point tip for accurate starts, variable helix for faster material removal, and a thicker tapered web for increased bit strength. It measures 2.13 inches in length with overall dimensions of 3.27 inches.
  • Comparison chart showing Cobalt Drill Bit as suitable for hard metal applications, lasting up to 15 times longer than black oxide bits. It has a 3-flat secure grip shank and is used with drills/drivers. Other options include Black Oxide and Shockwave, which are suitable for general purposes and metal respectively.
  • The RED HELIX™ Cobalt 1/2" Drill Bit is shown being used with a power drill to cut through a piece of metal, creating metal shavings. The background displays an industrial work environment.
  • The RED HELIX™ Cobalt 3/8" Drill Bit is attached to a drill and is actively drilling into a metal surface, creating fine metal shavings. The drill is held by a hand and positioned above a square metal object, with industrial pipes in the background.
48-89-2308

11/64" COBALT RED HELIX™ Drill Bit

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The RED HELIX™ Cobalt 11/64" Drill Bit features a spiral design for efficient drilling. It is made from durable cobalt, ideal for high-speed applications and drilling through hard metals. The bit is cylindrical with a helical groove pattern and a sharp point at the tip.

Bit Diameter: 11/64"

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Product Overview

Milwaukee® Cobalt RED HELIX™ Drill Bits are engineered for extreme durability and long life in hard metal applications. Designed with a Variable Helix ™ that includes an aggressive 35° Helix Angle which ends at 15°, the Cobalt bits with RED HELIX™ provide Rapid Chip Removal™ limiting heat buildup to Stay Sharper Longer™. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes. Ideal for tough applications and provide Up to 10X life vs. Black Oxide Drill Bits™ but can be used in all twist drilling applications.

  • 135° split point for precision start no walking

  • RED HELIX™ Design for Rapid Chip Removal™

  • Up to 10X Life vs. Black Oxide

  • Secure Grip™ - Prevents bit from slipping in chuck

  • 3-Flat Secure-Grip™ helps keep the bit fixed within the the chuck

  • Designed for Hard Metals, PVC and Wood

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