Extension Drill - Metric
Metric Extension Drills are designed for drilling of holes in inaccessible places which cannot be reached with standard length drills. Various combinations of diameter and overall lengths are available.
SIZE DEC. EQUIV FLUTE LENGTH OVERALL LENGTH
2.50 .0984 1-3/8 12
3.00 .1181 1-5/8 12
3.50 .1378 2 12
4.00 .1575 2 12
4.50 .1772 2-5/16 12
5.00 .1969 2-1/2 12
5.50 .2165 2-1/2 12
6.00 .2362 2-3/4 12
6.50 .2560 2-15/16 12
7.00 .2756 2-15/16 12
7.50 .2953 3-3/16 12
8.00 .3150 3-3/16 12
8.50 .3346 3-7/16 12
9.00 .3543 3-5/8 12
9.50 .3740 3-5/8 12
10.00 .3937 3-7/8 12
10.50 .4134 4-1/16 12
11.00 .4331 4-1/16 12
11.50 .4528 4-5/16 12
12.00 .4724 4-5/16 12
12.50 .4921 4-1/2 12
13.00 .5118 4-13/16 12
13.50 .5315 4-13/16 12
14.00 .5512 4-13/16 12
Extension Drill - Carbide Tipped Carbide Tipped Extension Drills are designed for drilling of holes in inaccessible places which cannot be reached with standard length drills. Special Carbide/Cobalt is for multi-purpose drilling. Can drill through hardened steel, most alloys, tile, ceramics, plastics, and many other difficult materials.
SIZE DEC. EQUIV FLUTE LENGTH OVERALL LENGTH
1/8 .1250 1-5/8 12
3/16 .1875 2-5/16 12
1/4 .2500 2-3/4 12
5/16 .3125 3-3/16 12
3/8 .3750 3-5/8 12
7/16 .4375 4-1/16 12
1/2 .5000 4-1/2 12