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Cobalt Extended-Length Drill Bits

Cobalt extended-length drill bits tolerate higher drilling speeds and are harder and more wear-resistant than high-speed steel extended-length drill bits. They provide some shock absorption and can be used in handheld power tools. These extended-length drill bits have longer flutes and more overall length than standard jobber-length drill bits of the same size, and they have longer shanks than taper-length drill bits. Their extra length allows them to create deep holes or drill into hard-to-reach workpieces.

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DRILL BIT, AIRCRAFT EXTENSION, #4, 2 1/2 IN FLUTE L, 6 IN OVERALL L, 0.209 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #4, 2 1/2 IN FLUTE L, 6 IN OVERALL L, 0.209 IN DIA, COBALT STEEL
Item # CSBDR64704
Mfr. Model # DR64704

EHC: EHC :

This number four, cobalt steel, aircraft extension drill bit has a flute length of 2 1/2 inches, an overall length of six inches, and a diameter of 0.209 inches.

This number four, cobalt steel, aircraft extension drill bit has a flute length of 2 1/2 inches, an overall length of six inches, and a diameter of 0.209 inches.

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DRILL BIT, AIRCRAFT EXTENSION, #5, 2 1/2 IN FLUTE L, 6 IN OVERALL L, 0.2055 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #5, 2 1/2 IN FLUTE L, 6 IN OVERALL L, 0.2055 IN DIA, COBALT STEEL
Item # CSBDR64705
Mfr. Model # DR64705

EHC: EHC :

This number five, cobalt steel, aircraft extension drill bit has a flute length of 2 1/2 inches, an overall length of six inches, and a diameter of 0.2055 inches.

This number five, cobalt steel, aircraft extension drill bit has a flute length of 2 1/2 inches, an overall length of six inches, and a diameter of 0.2055 inches.

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DRILL BIT, AIRCRAFT EXTENSION, #13, 2 5/16 IN FLUTE L, 6 IN OVERALL L, 0.185 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #13, 2 5/16 IN FLUTE L, 6 IN OVERALL L, 0.185 IN DIA, COBALT STEEL
Item # CSBDR64713
Mfr. Model # DR64713

EHC: EHC :

This number 13, cobalt steel, aircraft extension drill bit has a flute length of 2 5/16 inches, an overall length of six inches, and a diameter of 0.185 inches.

This number 13, cobalt steel, aircraft extension drill bit has a flute length of 2 5/16 inches, an overall length of six inches, and a diameter of 0.185 inches.

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DRILL BIT, AIRCRAFT EXTENSION, #8, 2 7/16 IN FLUTE L, 6 IN OVERALL L, 0.199 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #8, 2 7/16 IN FLUTE L, 6 IN OVERALL L, 0.199 IN DIA, COBALT STEEL
Item # CSBDR64708
Mfr. Model # DR64708

EHC: EHC :

This number eight, cobalt steel, aircraft extension drill bit has a flute length of 2 7/16 inches, an overall length of six inches, and a diameter of 0.199 inches.

This number eight, cobalt steel, aircraft extension drill bit has a flute length of 2 7/16 inches, an overall length of six inches, and a diameter of 0.199 inches.

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DRILL BIT, AIRCRAFT EXTENSION, #19, 2 1/8 IN FLUTE L, 6 IN OVERALL L, 0.166 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #19, 2 1/8 IN FLUTE L, 6 IN OVERALL L, 0.166 IN DIA, COBALT STEEL
Item # CSBDR64719
Mfr. Model # DR64719

EHC: EHC :

This number 19, cobalt steel, aircraft extension drill bit has a flute length of 2 1/8 inches, an overall length of six inches, and a diameter of 0.166 inches.

This number 19, cobalt steel, aircraft extension drill bit has a flute length of 2 1/8 inches, an overall length of six inches, and a diameter of 0.166 inches.

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DRILL BIT, AIRCRAFT EXTENSION, #45, 1 1/8 IN FLUTE L, 6 IN OVERALL L, 0.082 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #45, 1 1/8 IN FLUTE L, 6 IN OVERALL L, 0.082 IN DIA, COBALT STEEL
Item # CSBDR64745
Mfr. Model # DR64745

EHC: EHC :

This number 45, cobalt steel, aircraft extension drill bit has a flute length of 1 1/8 inches, an overall length of six inches, and a diameter of 0.082 inches.

This number 45, cobalt steel, aircraft extension drill bit has a flute length of 1 1/8 inches, an overall length of six inches, and a diameter of 0.082 inches.

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Web Price : $12.17 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, 2 15/16 IN FLUTE L, 6 IN OVERALL L, 0.281 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, 2 15/16 IN FLUTE L, 6 IN OVERALL L, 0.281 IN DIA, COBALT STEEL
Item # CSBDR64611
Mfr. Model # DR64611

EHC: EHC :

This cobalt steel aircraft extension drill bit has a flute length of 2 15/16 inches, an overall length of six inches, and a diameter of 0.281 inches.

This cobalt steel aircraft extension drill bit has a flute length of 2 15/16 inches, an overall length of six inches, and a diameter of 0.281 inches.

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Web Price : $61.26 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, #33, 1 1/2 IN FLUTE L, 6 IN OVERALL L, 0.113 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #33, 1 1/2 IN FLUTE L, 6 IN OVERALL L, 0.113 IN DIA, COBALT STEEL
Item # CSBDR64733
Mfr. Model # DR64733

EHC: EHC :

This number 33, cobalt steel, aircraft extension drill bit has a flute length of 1 1/2 inches, an overall length of six inches, and a diameter of 0.113 inches.

This number 33, cobalt steel, aircraft extension drill bit has a flute length of 1 1/2 inches, an overall length of six inches, and a diameter of 0.113 inches.

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Web Price : $10.45 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, #7, 2 7/16 IN FLUTE L, 6 IN OVERALL L, 0.201 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #7, 2 7/16 IN FLUTE L, 6 IN OVERALL L, 0.201 IN DIA, COBALT STEEL
Item # CSBDR64707
Mfr. Model # DR64707

EHC: EHC :

This number seven, cobalt steel, aircraft extension drill bit has a flute length of 2 7/16 inches, an overall length of six inches, and a diameter of 0.201 inches.

This number seven, cobalt steel, aircraft extension drill bit has a flute length of 2 7/16 inches, an overall length of six inches, and a diameter of 0.201 inches.

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Web Price : $16.99 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, 135 ° SPLIT POINT, 6 IN L, 7/64 IN DIA, COBALT STEEL/GOLD FINISH

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, 135 ° SPLIT POINT, 6 IN L, 7/64 IN DIA, COBALT STEEL/GOLD FINISH
Item # CSBDR64507
Mfr. Model # DR64507

EHC: EHC :

This aircraft extension drill bit is six inches long and has a diameter of 7/64 inches. It has a 135 Degrees split point and is made of cobalt steel with a gold finish.

This aircraft extension drill bit is six inches long and has a diameter of 7/64 inches. It has a 135 Degrees split point and is made of cobalt steel with a gold finish.

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CATALOGUE PAGE # 1329

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Web Price : $12.14 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, #10, 2 7/16 IN FLUTE L, 6 IN OVERALL L, 0.1935 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #10, 2 7/16 IN FLUTE L, 6 IN OVERALL L, 0.1935 IN DIA, COBALT STEEL
Item # CSBDR64710
Mfr. Model # DR64710

EHC: EHC :

This number 10, cobalt steel, aircraft extension drill bit has a flute length of 2 7/16 inches, an overall length of six inches, and a diameter of 0.1935 inches.

This number 10, cobalt steel, aircraft extension drill bit has a flute length of 2 7/16 inches, an overall length of six inches, and a diameter of 0.1935 inches.

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Web Price : $16.61 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, #2, 2 5/8 IN FLUTE L, 6 IN OVERALL L, 0.221 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #2, 2 5/8 IN FLUTE L, 6 IN OVERALL L, 0.221 IN DIA, COBALT STEEL
Item # CSBDR64702
Mfr. Model # DR64702

EHC: EHC :

This number two, cobalt steel, aircraft extension drill bit has a flute length of 2 5/8 inches, an overall length of six inches, and a diameter of 0.221 inches.

This number two, cobalt steel, aircraft extension drill bit has a flute length of 2 5/8 inches, an overall length of six inches, and a diameter of 0.221 inches.

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Web Price : $18.79 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, #50, 1 IN FLUTE L, 6 IN OVERALL L, 0.07 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #50, 1 IN FLUTE L, 6 IN OVERALL L, 0.07 IN DIA, COBALT STEEL
Item # CSBDR64750
Mfr. Model # DR64750

EHC: EHC :

This number 50, cobalt steel, aircraft extension drill bit has a flute length of one inch, an overall length of six inches, and a diameter of 0.07 inches.

This number 50, cobalt steel, aircraft extension drill bit has a flute length of one inch, an overall length of six inches, and a diameter of 0.07 inches.

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Web Price : $11.83 / EACH

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DRILL BIT, AIRCRAFT EXTENSION, #18, 2 1/8 IN FLUTE L, 6 IN OVERALL L, 0.1695 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #18, 2 1/8 IN FLUTE L, 6 IN OVERALL L, 0.1695 IN DIA, COBALT STEEL
Item # CSBDR64718
Mfr. Model # DR64718

EHC: EHC :

This number 18, cobalt steel, aircraft extension drill bit has a flute length of 2 1/8 inches, an overall length of six inches, and a diameter of 0.1695 inches.

This number 18, cobalt steel, aircraft extension drill bit has a flute length of 2 1/8 inches, an overall length of six inches, and a diameter of 0.1695 inches.

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DRILL BIT, AIRCRAFT EXTENSION, #21, 2 1/8 IN FLUTE L, 6 IN OVERALL L, 0.159 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, #21, 2 1/8 IN FLUTE L, 6 IN OVERALL L, 0.159 IN DIA, COBALT STEEL
Item # CSBDR64721
Mfr. Model # DR64721

EHC: EHC :

This number 21, cobalt steel, aircraft extension drill bit has a flute length of 2 1/8 inches, an overall length of six inches, and a diameter of 0.159 inches.

This number 21, cobalt steel, aircraft extension drill bit has a flute length of 2 1/8 inches, an overall length of six inches, and a diameter of 0.159 inches.

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DRILL BIT, AIRCRAFT EXTENSION, 2 7/8 IN FLUTE L, 6 IN OVERALL L, 0.257 IN DIA, COBALT STEEL

CLARKSON-OSBORN
DRILL BIT, AIRCRAFT EXTENSION, 2 7/8 IN FLUTE L, 6 IN OVERALL L, 0.257 IN DIA, COBALT STEEL
Item # CSBDR64606
Mfr. Model # DR64606

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This cobalt steel aircraft extension drill bit has a flute length of 2 7/8 inches, an overall length of six inches, and a diameter of 0.257 inches.

This cobalt steel aircraft extension drill bit has a flute length of 2 7/8 inches, an overall length of six inches, and a diameter of 0.257 inches.

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