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Home Irwin Industrial Tool Index Cobalt Metal Index & Fractional Drill Bit Sets
Irwin Cobalt Fractional Drill Bit Sets

Cobalt Metal Index Drill Bit Sets


29 piece cobalt fractional drill bit set
29 Piece Cobalt Metal Index Drill Bit Set
3018002 $121.00

FEATURES:

  • Cobalt steel extends cutting edge life and maintains cutting life after resharpening
  • Extra hard drill for greater wear
  • 135 split point tip starts on contact, cuts with less force
  • Reduced shank above 3/8" allows the use of larger drill bits in a 3/8" chuck
  • Rubber overmolded case protects kit if dropped
  • Tap & Drill selection chart for convenient reference.
  • Automatic indexing for easy bit access and identification
  • Removable cartridges: easy to carry bits from case to worksite
  • Sizes include 1/16" to 1/2" in 1/64" increments

Contents of 29 Piece Set
(and decimal equivalents):
1/16 .0625    3/16 .1875    19/64 .2969    13/32 .4063
5/64 .0781   13/64 .2031   5/16 .3125   27/64 .4219
3/32 .0938   7/32 .2188   21/64 .3281   7/16 .4375
7/64 .1094   15/64 .2344   11/32 .3438   29/64 .4531
1/8 .1250   1/4 .2500   23/64 .3594   15/32 .4688
9/64 .1406   17/64 .2656   3/8 .3750   31/64 .4844
5/32 .1563   9/32 .2813   25/64 .3906   1/2 .5000
11/64 .1719                  


15 piece cobalt fractional drill bit set
15 Piece Cobalt Fractional Drill Bit Set (1/16" - 1/2")
63137 $73.00

FEATURES:

  • 5% Cobalt for much higher hot hardness and abrasion resistance
  • Straight shank
  • Jobbers length
  • 15 Drills: 1/16 to 1/2 by 32nds.
  • Recommended for drilling hardened steel, super alloys, titanium and stainless steel
  • 135° split point begins drilling immediately, minimizing "bit walk"
  • Heavy-duty web construction for strength and durability
  • Metal case

Contents of 15 Piece Set (and decimal equivalents):
1/16 .0625    3/16 .1875    5/16 .3125    7/16 .4375
3/32 .0938   7/32 .2188   11/32 .3438   15/32 .4688
1/8 .1250   1/4 .2500   3/8 .3750   1/2 .5000
5/32 .1563   9/32 .2813   13/32 .4063      


21 piece cobalt fractional drill bit set
21 Piece Cobalt Fractional Drill Bit Set (1/16" - 3/8")
63221 $74.25

FEATURES:

  • 5% Cobalt for much higher hot hardness and abrasion resistance
  • Straight shank
  • Jobbers length
  • 21 Drills: 1/16 to 3/8 by 64ths.
  • Recommended for drilling hardened steel, super alloys, titanium and stainless steel
  • 135° split point begins drilling immediately, minimizing "bit walk"
  • Heavy-duty web construction for strength and durability
  • Metal case

Contents of 21 Piece Set (and decimal equivalents):
1/16 .0625    5/32 .1563    15/64 .2344    5/16 .3125
5/64 .0781   11/64 .1719   1/4 .2500   21/64 .3281
3/32 .0938   3/16 .1875   17/64 .2656   11/32 .3438
7/64 .1094   13/64 .2031   9/32 .2813   23/64 .3594
1/8 .1250   7/32 .2188   19/64 .2969   3/8 .3750
9/64 .1406                  




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