This self-centering, solid-carbide drill from Seco-Carboloy is TiN-coated for long tool life and employs a special edge design that aids in chip evacuation. Perfomax indexable insert drills feature a ...
Drill bit manufacturers have substantially improved polycrystalline diamond (PCD) cutters and drag bit designs since their introduction in 1972. PCD drill bits are now approaching the rolling cone ...