Cobalt Aircraft Extension Drills - Letter Sizes - 6" Overall Length

Made to NAS 907 Type J specifications, these cobalt extension drills are used for drilling in tough,high tensile strength materials like stainless steels, titanium and inconel. They are made of cobalt high speed steel,with heavy duty flute construction and 135° split point.
Extra length for hard to reach holes

Diameter Number	Part Number	Decimal Equivalent Inches	Flute Length Inches	Package Quantity	Price Each
B	06-418	.2380	2-3/4	6	$8.75
C	06-408	.2420	2-3/4	6	$10.00
D	06-403	.2460	2-3/4	6	$5.10
F	06-402	.2570	2-7/8	6	$7.45
G	06-401	.2610	2-7/8	6	$12.45
I	06-413	.2720	2-7/8	6	$9.30
J	06-404	.2770	2-7/8	6	$12.35
K	06-405	.2810	2-15/16	6	$12.20
M	06-409	.2950	3-1/46	6	$10.00
N	06-410	.3020	3-1/16	6	$13.95
U	06-407	.3680	3-5/8	6	$17.45
W	06-416	.3860	3-3/4	6	$16.95