Made of special High Speed Steel with 5% cobalt
Cobalt material provides better wear resistance in hardness and toughness
Suitable for high-tensile alloys, titanium, cast iron, high-nickel stainless steel
135º split point, self centers and keeps the drill from "skating" on hard meterial

Set includes:

1/16"
5/64"
3/32"
7/64"
1/8"
9/64"
5/32"
11/64"
3/16"
13/64"
7/32"
15/64"
1/4"
17/64"
9/32"
19/64"
5/16"
21/64"
11/32"
23/64"
3/8"