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13 piece Metal Index Cobalt Drill Bit Set 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger
CO4013

 
Model: CO4013
Actual Product may vary from the item shown
Bosch cobalt drill bits are specially designed for drilling in hard steel. Thick web helix delivers fast material removal combined with increased durability for maximum efficiency and performance. Each bit is manufactured to exacting specifications. Bits 1/8" and larger feature a split point that starts on contact with no walking or skating, eliminating the need for a center punch.
Benefits: CO4013 13 piece Metal Index Cobalt Drill Bit Set 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger
  • Withstands high-temperature applications for extended periods of time (up to 1,100°F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
  • Available in jobber length, full shank
  • Best used for drilling into light-gauge metal, high-carbon steel, aluminum and ally steel, cast iron, stainless steel and titanium
Specifications: CO4013 13 piece Metal Index Cobalt Drill Bit Set 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger
Number of Pieces13
Includes(1) 1/16”, (1) 5/64”, (1) 3/32”, (1) 7/64”, (1) 1/8”, (1) 9/64”, (1) 5/32”, (1) 11/64”, (1) 3/16”, (1) 13/64”, (1) 7/32”, (1) 15/64”, (1) 1/4”
Case TypeMetal index
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Item #ReviewsNumber of PiecesIncludesCase Type 
CO402929(1) 1/16”, (1) 5/64”, (1) 3/32”, (1) 7/64”, (1) 1/8”, (1) 9/64”, (1) 5/32”, (1) 11/64”, (1) 3/16”, (1) 13/64”, (1) 7/32”, (1) 15/64”, (1) 1/4”, (1) 17/64”, (1) 9/32”, (1) 19/64”, (1) 5/16”, (1) 21/64”, (1) 11/32”, (1) 23/64”, (1) 3/8”, (1) 25/64”, (1) 13/32”, (1) 27/64”, (1) 7/16”, (1) 29/64”, (1) 15/32”, (1) 31/64”, (1) 1/2”Metal index
CO1818(2) 1/16”, (2) 5/64”, (1) 3/32”, (2) 7/64”, (2) 1/8”, (1) 9/64”, (1) 5/32”, (1) 11/64”, (1) 3/16”, (1) 7/32”, (1) 1/4”, (1) 5/16”, (1) 3/8”, (1) 1/2”Plastic

Reviews: CO4013 13 piece Metal Index Cobalt Drill Bit Set 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Support: CO4013 13 piece Metal Index Cobalt Drill Bit Set 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger
Customer ServiceCustomer Support

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Additional Information: Cobalt Drill Bit Sets
PDFBosch Metal Drilling Selection Chart

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Cobalt Drill Bit Sets

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Cobalt Drill Bit Sets

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