Twist drill bit Cobra Step DIN 338 HSS, grinded, 3-Flank shank

Unalloyed steel and steel up to 1000 N/mm², non-ferrous metal, aluminium, PVC, plexiglass, wood

Ideal for through holes such as pipes, metal sheet, PVC and aluminium profiles (windows frames) with hand drilling machines

Boring of rivets or bolts

Reboring existing holes

• Faster drilling progress compared to other DIN338 drills with step head
  • Very sharp, easy-cutting drill tip with simultaneous short chip removal path towards the shank
• Perfect round holes
  • New head with innovative step geometry
• No hooking at the End of the bore hole
• Perfect finishing on both sides of the material
• Very good self-centering ability, especially on round surfaces like pipes or inclinated surfaces
  • Head with pilot drill
• No slipping in the drill chuck
  • 3 face shank