Letter gauge drill bits are made from premium grade high speed steel.
- U.S. AISI M2 Molybdenum High Speed Steel
- 135° Split Point
- Fully Ground from billet blanks
- Rockwell Hardness: Point C65 Shank C34
- Letter Gauge L Drill Bit - 0.29" dia. 4-1/4" len.
- U.S. AISI M2 Molybdenum High Speed Steel
- 135° Split Point
- Fully Ground from billet blanks
- Rockwell Hardness: Point C65 Shank C34
- Letter Gauge L Drill Bit - 0.29" dia. 4-1/4" len.
