High performance General purpose 4D drill
Steel, Unalloyed steel, Low alloyed steel, High alloyed steel
Cast Iron, Malleable Cast Iron (MCI), Grey Cast Iron (GCI), Nodular Cast Iron (NCI), Compacted Graphite Iron (CGI), Austempered Ductile Iron (ADI)
Hardened Steel, Hardened and tempered steels of 45 to 68HRC, Carburizing steel, ball bearing steel and tool steel
