1/4" Square BL Carbide Toolbit- Grade 370 for steel - Made in USA
Model #: CTB-BL4-370
- Shank Size: 1/4" Square x 2 1/4"
- Grade: 370
- Shape: BL (for left hand cuts with a 15 degree lead angle)
- Grade 370 is for cutting steel.
- Made in USA.
Guide to brazed tool bit shapes:
AR cuts right hand to a square shoulder.
AL cuts left hand to a square shoulder.
BR cuts right hand with a 15 degree lead angle.
BL cuts left hand with a 15 degree lead angle.
C is square nose for chamfering, facing, and turning.
D has 80 degree point for undercutting, ID and Outside Diameter chamfering.
E has 60 degree point for threading.