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Metal Drilling
Step Drill Bits
  • Cobalt Step Bit Kit (3PC)
  • A gloved hand operates a power drill with a Cobalt%20Step%20Bit attached, drilling into stainless steel. The text "Up to 15x life in stainless steel" appears in the lower-left corner, indicating the product's durability.
  • A gloved hand uses a red power drill with a Cobalt Step Bit, drilling into a stainless steel surface. Text on the image highlights "Up to 2x Faster Starts in Stainless with Rapid Strike™ Tip." The bit appears to be working efficiently, creating a smooth and clean hole.
  • Performance chart of Cobalt Step Bits Image Reel in stainless steel, showing Milwaukee Cobalt making 202 holes, a cobalt competitor making 49 holes, and a standard step bit making 5 holes. The product claims up to 15 times the lifespan in stainless steel.
  • Performance comparison chart of Cobalt Step Bits Image Reel in mild steel showing 1216 holes for MILWAUKEE Cobalt, 264 holes for a cobalt competitor, and 171 holes for a standard step bit.
  • Cobalt%20Step%20Bits are ideal for drilling through PVC, mild steel, and stainless steel. Suitable for use with all drill/drivers, these bits are optimized for high speed in mild steel and low speed with cutting fluid in stainless steel.
  • Milwaukee's 3/16 in. - 7/8 in. #4 Cobalt Step Drill Bit (12-Steps) features Rapid Strike tip, laser-engraved reference marks, smaller steps, elongated dual-flute, and 3-flat shank for precision and heat management.
  • Cobalt Step Bits Image Reel
  • Comparison chart showing Cobalt Step Bits with up to 15 times life in stainless steel, 3-flat secure grip shank, and compatibility with all drills/drivers optimized for mild and stainless steel use with cutting fluid. The chart includes two other models: Jam-Free and Shockwave Impact Duty.
  • Made In USA With Global Materials logo
48-89-9291

Cobalt Step Bit Kit (3PC)

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Includes (3)

Milwaukee Cobalt Step Bit #1 is a tapered drill bit with graduated sizes etched on its surface, starting from 1/8 inch to 1/2 inch. It has a sharp point and a durable, cobalt-coated surface designed for drilling through metal.
(1)
Cobalt Step Drill Bit #1 (1/8"-1/2")
48-89-9281
The Milwaukee Cobalt Step Bit #4 features a tapered design with engraving for various hole sizes ranging from 3/16 to 7/8 inches. The durable cobalt construction is ideal for drilling through tough materials. The bit has a hex shank at the base for secure attachment to drills.
(1)
Cobalt Step Drill Bit #4 (3/16-7/8")
48-89-9284
Milwaukee Cobalt Step Bit #9 features a stepped cone design with marked diameter measurements ranging from 7/8 inch to 1-1/8 inch. The bit is metallic with a shank suitable for drills and its durable cobalt construction ensures long-lasting performance.
(1)
Cobalt Step Drill Bit #9 (7/8-1-1/8")
48-89-9289

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Product Overview

Our 3-Piece Cobalt Step Drill Bit Set is engineered to deliver up to 15X the life in stainless compared to current solutions and up to 1000 holes in mild steel. The Cobalt Step Drill Bits are recommended up to 14-gauge. The elongated dual-flute design also offers users the best heat management combined with the smaller steps for the smoothest drilling experience, and a Rapid Strike™ tip that allows for 2X faster starts in stainless. Made in the USA with global materials, these step bits have best-in-class performance in cordless drills used on low-speed in Stainless Steel and high speed for mild steel.

  • Up to 15X Life in Stainless Steel & Over a 1000 Holes in Mild Steel

  • Up to 2X Faster with Rapid Strike Tip™

  • Elongated dual- flute for best heat management

  • Smaller steps for a smoothest drilling experience

  • The Rapid Strike Tip™ provides fast and accurate starts

  • Optimized for use in a cordless drill

  • Made in the USA with global materials

  • 3-Flat Secure-Grip™ shanks: Reduces bit slippage in the chuck

  • Laser-engraved reference marks: Easily stop on any hole size

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