Extra long Solid Carbide Drills for deep boring with internal oil hole:
FTO-GDXL Series: for deep hole drilling in steels, alloy steels and cast irons, upto 30 x D
FTO-M-GDXL Series & FTO-H-GDXL Series: for deep hole drilling in dies, and hardened material, upto 20 x D
CAO-GDXL: for deep hole drilling in copper and aluminium alloys, upto 30 x D