Milwaukee RED HELIX™ Cobalt Metric Drill Bit Set – 25PC

The 48-89-2531 Milwaukee RED HELIX™ Cobalt Metric Drill Bit Set (25PC) is built for fast, accurate drilling with extended bit life in tough materials. Featuring RED HELIX™ Technology—combining a QUAD EDGE™ tip, VARIABLE HELIX™ flute, and a thicker tapered web—these cobalt bits are designed for rapid chip removal, stronger bit bodies, and longer-lasting cutting edges. With a 3-FLAT SECURE-GRIP™ shank to help prevent slipping in the chuck and laser-etched sizing, it’s a versatile set for hard metals like stainless steel, cast iron, and black pipe, as well as wood and plastics.

Country of Origin: Varies by production batch

Key Features / Specifications

• Brand / Line: Milwaukee RED HELIX™
• Part Number: 48-89-2531
• Product Type: Metric cobalt drill bit set
• Set Size: 25 pieces
• Material: Cobalt
• Bit Technology: RED HELIX™ Technology (QUAD EDGE™ tip + VARIABLE HELIX™ flute + thicker tapered web)
• Tip Design: QUAD EDGE™ tip for longer-lasting sharpness
• Flute Design: VARIABLE HELIX™ flute for rapid chip removal
• Web Design: Thicker tapered web for increased bit strength
• Life Claim: 15X life vs. black oxide drill bits
• Shank: 3-FLAT SECURE-GRIP™ to reduce slipping in the chuck
• Tool Compatibility: Designed for drill drivers
• Material Use: Ideal for stainless steel, cast iron, black pipe, plus wood & plastics
• Identification: Laser-etched sizes
• Storage: Customizable accessory case designed for PACKOUT™
• Included Bits (25 pc):
  • 1.0mm (48-89-2501)
  • 1.5mm (48-89-2502)
  • 2.0mm (48-89-2503)
  • 2.5mm (48-89-2504)
  • 3.0mm (48-89-2505)
  • 3.5mm (48-89-2507)
  • 4.0mm (48-89-2508)
  • 4.5mm (48-89-2510)
  • 5.0mm (48-89-2512)
  • 5.5mm (48-89-2513)
  • 6.0mm (48-89-2514)
  • 6.5mm (48-89-2515)
  • 6.8mm (48-89-2517)
  • 7.5mm (48-89-2518)
  • 8.0mm (48-89-2519)
  • 8.5mm (48-89-2520)
  • 9.0mm (48-89-2521)
  • 9.5mm (48-89-2522)
  • 10.0mm (48-89-2523)
  • 10.5mm (48-89-2524)
  • 11.0mm (48-89-2525)
  • 11.5mm (48-89-2526)
  • 12.0mm (48-89-2527)
  • 12.5mm (48-89-2528)
  • 13.0mm (48-89-2529)

Ideal For

• Drilling hard metals like stainless steel, cast iron, and black pipe
• Users wanting longer life from cobalt bits and advanced tip/flute design
• Drill-driver work where 3-flat shanks help reduce chuck slipping
• Fast drilling with better chip evacuation from VARIABLE HELIX™ flutes
• Organized storage with a PACKOUT™-compatible customizable case