4932459845 - Metal drill bit HSS-G Thunderweb, 3.7 x 39/70 mm (10 pcs.)

• 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.
• Parabolic web cross section: Large web thickness. Strength built in.
• Flute geometry - Thunderweb flute form ejects hot chips rapidly. Dissipates heat better increasing life time.
• 135° Split point - Precision starting, drill bit won't walk on material surface.
• Polished finish reduces friction and extends drill bit life.
• Impact resistant ABS case with added rubber corner protection.
• Accepts higher feed pressure and torque equalling less breakages.