- K1: Cast Iron (Gray, CG)
- K2: Cast Iron (Ductile, A536)
- P1: Steel (1018, 1050)
- P2: Steel (4140, 8620)
- S1: High Temp (Iconel, Ni-based)
- N2: Non-ferrous (Si + 10%)
Kooltwist Heavy Duty Carbide-Tip Drills
Work Materials
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