Milwaukee 23PC Red Helix Cobalt Drill Bit Set 48-89-2338

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Part# 12-05697
MFR Model# 48-89-2338


The Milwaukee Red Helix Cobalt 23 Piece Drill Bit Set is engineered for extreme durability and longer life in hard metal applications. The Milwaukee Cobalt drill bits are designed with a Variable Helix that includes an aggressive 35° Helix Angle which ends at 15°. The drill bits have Quadedge Tip to decrease heat buildup and drill faster. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes in Hard Metal, PVC and wood. The tapered drill bits feature a new Enhanced Tapered Web that strengthens the bit's core to increase flute durability. The cobalt twist drill bits are ideal for tough applications, providing up to 15X life vs. Black Oxide Drill Bits.

This set includes 23 bits from 1/16" to 1/2".


  • Up to 10X Life vs. black oxide
  • Red Helix design for rapid chip removal
  • 135° split point for precision start no walking
  • Chip breaker decreases heat buildup
  • Secure grip - prevents bit from slipping in chuck
  • In The Box

  • (2) 1/16" COBALT RED HELIX™ Drill Bit(48-89-2301)
  • (2) 5/64" COBALT RED HELIX™ Drill Bit(48-89-2302)
  • (1) 3/32" COBALT RED HELIX™ Drill Bit(48-89-2303)
  • (2) 7/64" COBALT RED HELIX™ Drill Bit(48-89-2304)
  • (2) 1/8" COBALT RED HELIX™ Drill Bit(48-89-2305)
  • (2) 9/64" COBALT RED HELIX™ Drill Bit(48-89-2306)
  • (2) 5/32" COBALT RED HELIX™ Drill Bit(48-89-2307)
  • (1) 11/64" COBALT RED HELIX™ Drill Bit(48-89-2308)
  • (2) 3/16" COBALT RED HELIX™ Drill Bit(48-89-2309)
  • (1) 13/64" COBALT RED HELIX™ Drill Bit(48-89-2310)
  • (1) 7/32" COBALT RED HELIX™ Drill Bit(48-89-2311)
  • (1) 15/64" COBALT RED HELIX™ Drill Bit(48-89-2312)
  • (2) 1/4" COBALT RED HELIX™ Drill Bit(48-89-2313)
  • (1) 5/16" COBALT RED HELIX™ Drill Bit(48-89-2317)
  • (1) 3/8" COBALT RED HELIX™ Drill Bit(48-89-2321)
  • Reviews


    Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.