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Hole Enlarging Drills
Image Description Price Buy
Buy 15101 Irwin TiN HSS Step Drill Bits 15101 Irwin TiN HSS Step Drill Bits
  • Hole Diameter (Inch): 1/8 to 1/2
  • Drill Bit Finish/Coating: TiN
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 15101
  • Finish/Coating: TiN
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 1/2
  • Number of Hole Sizes: 13
  • Minimum Hole Diameter (Inch): 1/8
  • MaxDrilling Capacity (Inch): 1/2
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 1/8
  • Shank Diameter (Inch): 1/4
  • Brand: Irwin
  • Enco Part Number: 302-1106
Click for More Details
 $33.36 ea

In Stock
Buy 15102 Irwin TiN HSS Step Drill Bits 15102 Irwin TiN HSS Step Drill Bits
  • Hole Diameter (Inch): 3/16 to 1/2
  • Drill Bit Finish/Coating: TiN
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 15102
  • Finish/Coating: TiN
  • Material: HSS
  • Step Thickness (Inch): 3/8
  • Maximum Hole Diameter (Inch): 1/2
  • Number of Hole Sizes: 6
  • Minimum Hole Diameter (Inch): 3/16
  • MaxDrilling Capacity (Inch): 1/2
  • Flute Length (Inch): 3/8
  • MinDrilling Capacity (Inch): 3/16
  • Shank Diameter (Inch): 1/4
  • Brand: Irwin
  • Enco Part Number: 302-1109
Click for More Details
 $33.36 ea

In Stock
Buy 15103 Irwin TiN HSS Step Drill Bits 15103 Irwin TiN HSS Step Drill Bits
  • Hole Diameter (Inch): 1/4 to 3/4
  • Drill Bit Finish/Coating: TiN
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 15103
  • Finish/Coating: TiN
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 3/4
  • Number of Hole Sizes: 9
  • Minimum Hole Diameter (Inch): 1/4
  • MaxDrilling Capacity (Inch): 3/4
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 1/4
  • Shank Diameter (Inch): 3/8
  • Brand: Irwin
  • Enco Part Number: 302-1107
Click for More Details
 $59.31 ea

In Stock
Buy 15104 Irwin TiN HSS Step Drill Bits 15104 Irwin TiN HSS Step Drill Bits
  • Hole Diameter (Inch): 3/16 to 7/8
  • Drill Bit Finish/Coating: TiN
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 15104
  • Finish/Coating: TiN
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 7/8
  • Number of Hole Sizes: 12
  • Minimum Hole Diameter (Inch): 3/16
  • MaxDrilling Capacity (Inch): 7/8
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 3/16
  • Shank Diameter (Inch): 3/8
  • Brand: Irwin
  • Enco Part Number: 302-1108
Click for More Details
 $71.68 ea

In Stock
Buy 10231 Irwin General Purpose Bright HSS Step Drill Bits 10231 Irwin General Purpose Bright HSS Step Drill Bits
  • Hole Diameter (Inch): 1/8 to 1/2
  • Drill Bit Finish/Coating: Bright
  • Drill Bit Material: Cobalt
  • Manufacturer Part Number: 10231
  • Finish/Coating: Bright
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 1/2
  • Drill Grade: General Purpose
  • Number of Hole Sizes: 13
  • Minimum Hole Diameter (Inch): 1/8
  • MaxDrilling Capacity (Inch): 1/2
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 1/8
  • Shank Diameter (Inch): 1/4
  • Brand: Irwin
  • Enco Part Number: 302-1101
Click for More Details
 $24.22 ea

In Stock
Buy 10232 Irwin General Purpose Bright HSS Step Drill Bits 10232 Irwin General Purpose Bright HSS Step Drill Bits
  • Hole Diameter (Inch): 3/16 to 1/2
  • Drill Bit Finish/Coating: Bright
  • Drill Bit Material: Cobalt
  • Manufacturer Part Number: 10232
  • Finish/Coating: Bright
  • Material: HSS
  • Step Thickness (Inch): 3/8
  • Maximum Hole Diameter (Inch): 1/2
  • Drill Grade: General Purpose
  • Number of Hole Sizes: 6
  • Minimum Hole Diameter (Inch): 3/16
  • MaxDrilling Capacity (Inch): 1/2
  • Flute Length (Inch): 3/8
  • MinDrilling Capacity (Inch): 3/16
  • Shank Diameter (Inch): 1/4
  • Brand: Irwin
  • Enco Part Number: 302-1105
Click for More Details
 $24.22 ea

In Stock
Buy 10233 Irwin General Purpose Bright HSS Step Drill Bits 10233 Irwin General Purpose Bright HSS Step Drill Bits
  • Hole Diameter (Inch): 1/4 to 3/4
  • Drill Bit Finish/Coating: Bright
  • Drill Bit Material: Cobalt
  • Manufacturer Part Number: 10233
  • Finish/Coating: Bright
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 3/4
  • Drill Grade: General Purpose
  • Number of Hole Sizes: 9
  • Minimum Hole Diameter (Inch): 1/4
  • MaxDrilling Capacity (Inch): 3/4
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 1/4
  • Shank Diameter (Inch): 3/8
  • Brand: Irwin
  • Enco Part Number: 302-1103
Click for More Details
 $44.07 ea

In Stock
Buy 10234 Irwin General Purpose Bright HSS Step Drill Bits 10234 Irwin General Purpose Bright HSS Step Drill Bits
  • Hole Diameter (Inch): 3/16 to 7/8
  • Drill Bit Finish/Coating: Bright
  • Drill Bit Material: Cobalt
  • Manufacturer Part Number: 10234
  • Finish/Coating: Bright
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 7/8
  • Drill Grade: General Purpose
  • Number of Hole Sizes: 12
  • Minimum Hole Diameter (Inch): 3/16
  • MaxDrilling Capacity (Inch): 7/8
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 3/16
  • Shank Diameter (Inch): 3/8
  • Brand: Irwin
  • Enco Part Number: 302-1104
Click for More Details
 $52.61 ea

In Stock
Buy 10235 Irwin General Purpose Bright HSS Step Drill Bits 10235 Irwin General Purpose Bright HSS Step Drill Bits
  • Hole Diameter (Inch): 1/4 to 1-3/8
  • Drill Bit Finish/Coating: Bright
  • Drill Bit Material: Cobalt
  • Manufacturer Part Number: 10235
  • Finish/Coating: Bright
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 1-3/8
  • Drill Grade: General Purpose
  • Number of Hole Sizes: 10
  • Minimum Hole Diameter (Inch): 1/4
  • MaxDrilling Capacity (Inch): 1-3/8
  • Flute Length (Inch): 1/8
  • MinDrilling Capacity (Inch): 1/4
  • Shank Diameter (Inch): 1/2
  • Brand: Irwin
  • Enco Part Number: 325-6369
Click for More Details
 $92.37 ea

In Stock
Buy 10310 Irwin General Purpose HSS Step Drill Bits 10310 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 1/2
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10310
  • Material: HSS
  • Number of Hole Sizes: 1
  • Drill Grade: General Purpose
  • Maximum Hole Diameter (Inch): 1/2
  • MaxDrilling Capacity (Inch): 1/2
  • Minimum Hole Diameter (Inch): 1/2
  • Shank Diameter (Inch): 1/4
  • Brand: Irwin
  • Enco Part Number: 319-1435
Click for More Details
 $21.77 ea

In Stock
Buy 10311 Irwin General Purpose HSS Step Drill Bits 10311 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 7/8
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10311
  • Material: HSS
  • Number of Hole Sizes: 1
  • Drill Grade: General Purpose
  • Maximum Hole Diameter (Inch): 7/8
  • MaxDrilling Capacity (Inch): 7/8
  • Minimum Hole Diameter (Inch): 7/8
  • Shank Diameter (Inch): 3/8
  • Brand: Irwin
  • Enco Part Number: 319-1436
Click for More Details
 $44.84 ea

In Stock
Buy 10312 Irwin General Purpose HSS Step Drill Bits 10312 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 3/8
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10312
  • Material: HSS
  • Number of Hole Sizes: 1
  • Drill Grade: General Purpose
  • Maximum Hole Diameter (Inch): 3/8
  • MaxDrilling Capacity (Inch): 3/8
  • Minimum Hole Diameter (Inch): 3/8
  • Shank Diameter (Inch): 1/4
  • Brand: Irwin
  • Enco Part Number: 319-1437
Click for More Details
 $17.17 ea

In Stock
Buy 10313 Irwin General Purpose HSS Step Drill Bits 10313 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 1-1/8
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10313
  • Material: HSS
  • Number of Hole Sizes: 1
  • Drill Grade: General Purpose
  • Maximum Hole Diameter (Inch): 1-1/8
  • MaxDrilling Capacity (Inch): 1-1/8
  • Minimum Hole Diameter (Inch): 1-1/8
  • Shank Diameter (Inch): 1/2
  • Brand: Irwin
  • Enco Part Number: 319-1438
Click for More Details
 $75.90 ea

In Stock
Buy 10314 Irwin General Purpose HSS Step Drill Bits 10314 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 1-7/32
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10314
  • Material: HSS
  • Number of Hole Sizes: 1
  • Drill Grade: General Purpose
  • Maximum Hole Diameter (Inch): 1-7/32
  • MaxDrilling Capacity (Inch): 1-7/32
  • Minimum Hole Diameter (Inch): 1-7/32
  • Shank Diameter (Inch): 1/2
  • Brand: Irwin
  • Enco Part Number: 319-1439
Click for More Details
 $68.48 ea

In Stock
Buy 10220 Irwin General Purpose HSS Step Drill Bits 10220 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 9/16 to 1
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10220
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 1
  • Number of Hole Sizes: 8
  • Drill Grade: General Purpose
  • Minimum Hole Diameter (Inch): 9/16
  • MaxDrilling Capacity (Inch): 1
  • MinDrilling Capacity (Inch): 9/16
  • Shank Diameter (Inch): 1/2
  • Brand: Irwin
  • Enco Part Number: 319-0690
Click for More Details
 $47.28 ea

In Stock
Buy 10221 Irwin General Purpose HSS Step Drill Bits 10221 Irwin General Purpose HSS Step Drill Bits
  • Hole Diameter (Inch): 13/16 to 1-3/8
  • Point Type: Standard
  • Drill Bit Material: High Speed Steel
  • Manufacturer Part Number: 10221
  • Material: HSS
  • Step Thickness (Inch): 1/8
  • Maximum Hole Diameter (Inch): 1-3/8
  • Number of Hole Sizes: 10
  • Drill Grade: General Purpose
  • Minimum Hole Diameter (Inch): 13/16
  • MaxDrilling Capacity (Inch): 1-3/8
  • MinDrilling Capacity (Inch): 13/16
  • Shank Diameter (Inch): 1/2
  • Brand: Irwin
  • Enco Part Number: 319-0691
Click for More Details
 $100.92 ea

In Stock
Buy Hole Enlarging General Purpose HSS Drill Bit Sets Hole Enlarging General Purpose HSS Drill Bit Sets
  • Primary Application: Metalworking/Multipurpose Drill Bits
  • Number of Pieces: 3
  • Material: HSS
  • Type: Hole Enlarging
  • Drill Bit Material: High Speed Steel
  • Drill Grade: General Purpose
  • Size Range: 1/8 - 1/2 x 32nds, 3/16 - 1/2 x 16ths, 1/4 - 3/4 x 16ths
  • Maximum Drill Bit Size (Inch): 3/4
  • Minimum Drill Bit Size (Inch): 1/8
  • Enco Part Number: 890-9613
Click for More Details
 $44.76 ea
$21.95 ea
 Web Price
In Stock
Buy Hole Enlarging General Purpose TiN HSS Drill Bit Sets Hole Enlarging General Purpose TiN HSS Drill Bit Sets
  • Primary Application: Metalworking/Multipurpose Drill Bits
  • Drill Bit Finish/Coating: TiN
  • Drill Bit Material: High Speed Steel
  • Finish/Coating: TiN
  • Minimum Drill Bit Size (Inch): 1/8
  • Material: HSS
  • Number of Pieces: 3
  • Type: Hole Enlarging
  • Size Range: 1/8 - 1/2 x 32nds, 3/16 - 1/2 x 16ths, 1/4 - 3/4 x 16ths
  • Drill Grade: General Purpose
  • Maximum Drill Bit Size (Inch): 3/4
  • Enco Part Number: 890-9614
Click for More Details
 $63.33 ea
$21.95 ea
 Web Price
In Stock
Buy General Purpose TiN HSS Step Drill Bits (890-9621) General Purpose TiN HSS Step Drill Bits (890-9621)
  • General Purpose TiN HSS Step Drill Bits
  • Enco Part Number: 890-9621
Click for More Details
 $17.55 ea
$8.19 ea
 Web Price
In Stock
Buy General Purpose TiN HSS Step Drill Bits (890-9622) General Purpose TiN HSS Step Drill Bits (890-9622)
  • General Purpose TiN HSS Step Drill Bits
  • Enco Part Number: 890-9622
Click for More Details
 $31.66 ea
$14.95 ea
 Web Price
In Stock

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