- Drill bits made of M-42 8% cobalt high-speed steel for super abrasive resistance in tough metals
- 135° split point reduces feed pressure for easier penetration without work hardening.
- Each drill bit has a heavy-duty spiral flute design that produces fast chip ejection
![Irwin® Left-Hand Mechanics Length Cobalt High Speed Steel Drill Bits, 19/64 in, Split, 6/BIT, #IR-30519 (6/Pkg) Irwin® Left-Hand Mechanics Length Cobalt High Speed Steel Drill Bits, 19/64 in, Split, 6/BIT, #IR-30519 (6/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/260028/441758/30507__88937.1665407855.jpg?c=2)