Cobalt Drill Bits

Cobalt drill bits offer greater durability than black oxide bits, and are one of the best choices for wood, plastic, stainless steel, light metal drilling applications. Our selection of cobalt drill bits can withstand high speed drilling, and are built for years of durable service. With more than seventy cobalt drill bits to choose from, manufactured by brands like Milwaukee, DEWALT, and Bosch, you're sure to find the right cobalt drill bit at Toolbarn.
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  • Milwaukee 48-89-2303 3/32" Thunderbolt Cobalt Drill Bits, 2 Pack
    $5.99

    Milwaukee
    3/32" Cobalt RED HELIX

    SKU 48-89-2303
    Free Shipping
  • Milwaukee 5/64" Cobalt RED HELIX (48-89-2302)
    $5.25

    Milwaukee
    5/64" Cobalt RED HELIX

    SKU 48-89-2302
    Free Shipping
  • Milwaukee 48-89-2307 5/32" Thunderbolt Cobalt Drill Bits
    $6.49

    Milwaukee
    5/32" Cobalt RED HELIX

    SKU 48-89-2307
    Free Shipping
  • Milwaukee 48-89-2304 7/64" Thunderbolt Cobalt Drill Bits

    MSRP: $3.50

    $1.99

    Milwaukee
    7/64" Cobalt RED HELIX

    SKU 48-89-2304
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