Greenlee Drill Bits | Air Extreme Inc.

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#12 Multi-Hole Step Drill Bit, 7/8" - 1-3/8" , 1/16" Increments, High Speed Steel Air Extreme Inc.

Greenlee

#12 Multi-Hole Step Drill Bit, 7/8" - 1-3/8" , 1/16" Increments, High Speed Steel

Flute Type: Straight
Shank Size: 1/2"
Number of Drill Stages: 4
Max. Sheet Metal Thickness: 10 Gauge (3.5 mm)

Model: UAL103

Mfr. No.:Mfr. No.: GSB12

$149.00 / Each

0 In Stock

Ships in 7-10 days

Drill/Tap Bit, #10, High Speed Steel Air Extreme Inc.

Greenlee

Drill/Tap Bit, #10, High Speed Steel

TPI: 24
Thread Type: NC
Material Type: Mild Steel, Copper, Brass, Aluminum
Material Thickness: Up to 10 GA
Point Type: Split Point With Web Thinning
Shank: 1/4" Quick Change Hex

Model: TCU335

Mfr. No.:Mfr. No.: DTAP10-24

$21.90 / Each

0 In Stock

Ships in 2-3 weeks

Step Bit Set, 1/8"/3/16" - 1/2"/7/8"/1-1/8" Air Extreme Inc.

Greenlee

Step Bit Set, 1/8"/3/16" - 1/2"/7/8"/1-1/8"

Shank Size: 1/2"
Includes: GSB01 1/8" - 1/2" (3.2 - 12.7 mm); GSB04 3/16" - 7/8"(4.8 - 22.2 mm); GSB09 3/16" - 1-1/8"(4.8 - 28.6 mm); Carrying case
Maximum Sheet Metal Thickness: 10 gauge (3.5 mm)
Application: Cuts mild steel, aluminum, brass, copper, wood, fiberglass, plastics and laminates

Model: TCU334

Mfr. No.:Mfr. No.: GSBSET3

$269.00 / Each

0 In Stock

Ships in 11-14 days

Step Bit, 1/8"/3.2 mm - 1/2"/12.7 mm Air Extreme Inc.

Greenlee

Step Bit, 1/8"/3.2 mm - 1/2"/12.7 mm

Shank Size: 1/2"
Maximum Sheet Metal Thickness: 10 gauge (3.5 mm)
Application: Cuts mild steel, aluminum, brass, copper, wood, fiberglass, plastics and laminates

Model: TCU333

Mfr. No.:Mfr. No.: GSB01

$54.50 / Each

0 In Stock

Ships July 2026

Drill/Tap Bit, #10, High Speed Steel Air Extreme Inc.

Greenlee

Drill/Tap Bit, #10, High Speed Steel

TPI: 32
Thread Type: NF
Material Type: Mild Steel, Copper, Brass, Aluminum
Material Thickness: Up to 10 GA
Point Type: Split Point With Web Thinning
Shank: 1/4" Quick Change Hex

Model: TCU331

Mfr. No.:Mfr. No.: DTAP10-32

$20.90 / Each

2 In Stock

Drill/Tap Bit, #6, High Speed Steel Air Extreme Inc.

Greenlee

Drill/Tap Bit, #6, High Speed Steel

TPI: 32
Thread Type: NC
Material Type: Mild Steel, Copper, Brass, Aluminum
Material Thickness: Up to 10 GA
Point Type: Split Point With Web Thinning
Shank: 1/4" Quick Change Hex

Model: TCU330

Mfr. No.:Mfr. No.: DTAP6-32

$21.90 / Each

4 In Stock

Drill/Tap Bit, #8, High Speed Steel Air Extreme Inc.

Greenlee

Drill/Tap Bit, #8, High Speed Steel

TPI: 32
Thread Type: NC
Material Type: Mild Steel, Copper, Brass, Aluminum
Material Thickness: Up to 10 GA
Point Type: Split Point With Web Thinning

Model: TCU329

Mfr. No.:Mfr. No.: DTAP8-32

$21.90 / Each

0 In Stock

Ships in 11-14 days

Drill/Tap Bit, 1/4", High Speed Steel Air Extreme Inc.

Greenlee

Drill/Tap Bit, 1/4", High Speed Steel

Decimal Drill Size: 0.25"
TPI: 20
Thread Type: NC
Material Type: Mild Steel, Copper, Brass, Aluminum
Material Thickness: Up to 10 GA

Model: TCU328

Mfr. No.:Mfr. No.: DTAP1/4-20

$20.90 / Each

0 In Stock

Ships in 11-14 days

Greenlee

Multi-Hole Step Bit, 3/16"/4.8 mm - 7/8"/#4/22.2 mm

Flute Type: Straight
Shank Size: 1/2"
No. of Drill Stages: 12
Max. Sheet Metal Thickness: 10 Gauge (3.5 mm)

Model: TCT566

Mfr. No.:Mfr. No.: GSB04

$96.90 / Each

0 In Stock

Ships in 7-10 days

Greenlee

#9 Multi-Hole Step Bit, 3/16" - 1-1/8" , High Speed Steel

Overall Length: 2-1/2"
Flute Type: Straight
Shank Size: 1/2"
No. of Steps: 4
Max. Sheet Metal Thickness: 10 Gauge (3.5 mm)

Model: TCT545

Mfr. No.:Mfr. No.: GSB09

$119.00 / Each

0 In Stock

Ships August 2026