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AT Aircraft Extension / Extra Length

Alfa Tools produces aircraft extension drills—also known as extra-length or long-series drills—crafted from high-speed steel (HSS) and designed with extended flutes and overall lengths for deep hole drilling in tight spaces, thick materials, and hard-to-access areas. Our comprehensive range includes Type B and Type J geometries in both 6-inch and 12-inch lengths, available in sizes from 3/64" to 1/2" diameter. These specialty drill bits are ideal for aerospace, automotive, industrial manufacturing, maintenance, and repair applications.

Alfa Tools AECO60701 1/16 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60701 1/16 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60701
MPN: AECO60701

Save $14.30
Alfa Tools AECO60702 5/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60702 5/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60702
MPN: AECO60702

Save $14.30
Alfa Tools AECO60703 3/32 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60703 3/32 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60703
MPN: AECO60703

Save $13.39
Alfa Tools AECO60704 7/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60704 7/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60704
MPN: AECO60704

Save $13.91
Alfa Tools AECO60705 1/8 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60705 1/8 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60705
MPN: AECO60705

Save $13.91
Alfa Tools AECO60706 9/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60706 9/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60706
MPN: AECO60706

Save $15.98
Alfa Tools AECO60707 5/32 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60707 5/32 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60707
MPN: AECO60707

Save $15.98
Alfa Tools AECO60708 11/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60708 11/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60708
MPN: AECO60708

Save $17.29
Alfa Tools AECO60709 3/16 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60709 3/16 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60709
MPN: AECO60709

Save $17.29
Alfa Tools AECO60710 13/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60710 13/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60710
MPN: AECO60710

Save $21.54
Alfa Tools AECO60711 7/32 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60711 7/32 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60711
MPN: AECO60711

Save $21.54
Alfa Tools AECO60712 15/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60712 15/64 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60712
MPN: AECO60712

Save $22.94
Alfa Tools AECO60713 1/4 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60713 1/4 X 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60713
MPN: AECO60713

Save $22.94
Alfa Tools AECO60731 #1 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60731 #1 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60731
MPN: AECO60731

Save $25.83
Alfa Tools AECO60732 #2 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60732 #2 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60732
MPN: AECO60732

Save $25.83
Alfa Tools AECO60733 #3 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60733 #3 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60733
MPN: AECO60733

Save $24.25
Alfa Tools AECO60734 #4 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60734 #4 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60734
MPN: AECO60734

Save $24.25
Alfa Tools AECO60735 #5 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60735 #5 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60735
MPN: AECO60735

Save $24.25
Alfa Tools AECO60736 #6 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60736 #6 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60736
MPN: AECO60736

Save $24.25
Alfa Tools AECO60737 #7 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60737 #7 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60737
MPN: AECO60737

Save $24.25
Alfa Tools AECO60738 #8 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60738 #8 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60738
MPN: AECO60738

Save $24.25
Alfa Tools AECO60739 #9 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60739 #9 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60739
MPN: AECO60739

Save $21.24
Alfa Tools AECO60740 #10 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60740 #10 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60740
MPN: AECO60740

Save $21.24
Alfa Tools AECO60741 #11 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

Alfa Tools AECO60741 #11 SWG 12 COBALT AIRCRAFT EXTENSION DRILL - Std Qty Pack 6

SKU: AT-AECO60741
MPN: AECO60741

Save $21.24