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Review on πŸ”© DEWALT Industrial Cobalt Pilot Bit DWA1240 by Carlos Massey

Revainrating 1 out of 5

NOT a quality kit of drill parts and accessories

They are advertised as heavy duty and capable of drilling through steel. I bought these to drill out 2 bolts from an intake manifold gasket repair. These are not hardened steel bolts, but ordinary aluminum bolts. These parts got hot quickly, and yes, they were lubricated. 2 screws broke after a few minutes of drilling. Another burst at the base. Total garbage. I wouldn't recommend it for anything heavy.

Pros
  • Industrial grade cobalt for optimum life and durability in metal
Cons
  • Miscellaneous Miscellaneous