Thunderweb design is characterised by a conical shaped web which gets thicker towards the back of the drill bit. Standard drill bits have a constant thickness throughout their length. Even at the narrowest point the Thunderweb core is thicker than that of a standard drill bit.

• Features parabolic web cross section with a large web thickness with strength built in.
• Polished finish reduces friction and extends drill bit life.
• Impact resistant ABS case with added rubber corner protection.
• Accepts higher feed pressure and torque, equaling less breakages.