This Heart of Mine
- Set of 21 jobber length drill bits includes inch sizes 1/16" through 3/8" in 1/64" increments.
- High-speed steel (HSS) provides hardness for wear resistance.
- Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
- Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging.
- Extra thick web for increased strength and rigidity compared to standard drill bits.