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782 Review
33 Karma

Review on 6 Piece Hymnorq HSS Metric Combination Drill And Tap Bit Set With Spiral Flute And 1/4” Hex Shank, Ranging From M3-M10 - High Speed Steel For Enhanced Performance by Meech Elliott

Revainrating 1 out of 5

Brittle and broken bits.

Had these in my toolbox just in case for about a year. Finally had to tap some metric machine screws on a part. Immediately broke the M4 bit. Then broke the M5, and M6 tap bits the moment they bit into the 14 gauge mild sheet steel. Pretty pissed. Drove a few self tapping screws instead without any effort. Waste of money, waste of time.

Pros
  • Low cost, easy to use, seems durable
Cons
  • Not suitable for use on very thin materials