The Milwaukee Cobalt Step Drill Bits are engineered with a Cobalt Base Material and Aluminium Chromium Nitride (AlCrN) coating for 10x more life vs. Milwaukee standard step drill bits. Featuring the RAPID STRIKE™ Tip helps provide accurate starts without walking whilst generating less heat for faster penetration. For added accuracy and convenience, easy stop, laser etched identification and a durable 3-flat SECURE GRIP™ shank helps maximises performance from application to application. Made in the USA with global materials, Milwaukee's Cobalt Step Drill Bits are optimised for low speed use in Stainless Steel and high speed use in mild steel.


  • Delivers up to 10x longer life in Stainless Steel compared to Standard Step Drill Bits
  • RAPID STRIKE™ Tip for fast and accurate starts, generating less heat and drilling holes 2x faster
  • Easy Stop feature with laser-etched identification for added user convenience and drilling accuracy
  • Durable 3-Flat SECURE GRIP™ Shank design prevents slipping in the chuck
  • Made in the USA
Size 4 - 20 mm
Number of Steps 10
Increments 4, 6, 8, 10, 12, 14, 16, 18, 19, 20 mm
Base Material Cobalt Steel (M35)
Coating Aluminum Chromium Nitride
Shank 3-Flat SECURE GRIP (8 mm)
Length 62mm
SKU 48899372
Barcode # 045242603862
Brand Milwaukee
Shipping Weight 0.0600kg
Shipping Width 0.162m
Shipping Height 0.073m
Shipping Length 0.026m
Shipping Cubic 0.000307476m3
Type tools

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