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Review on HHIP 3900 0102 End Mill Holder: Precision Tool for Efficient Machining by Walter Martin

Revainrating 1 out of 5

THEY DO NOT FIT YOUR TOOLS, THEY ARE FACTORY DEFECTIVE.

I had 3 spares, ALL 0.004 inch smaller. None of my 3/8" tools fit. I checked it three times with the calibration pins and Mitutoyo caliper. The build quality is great but if they don't fit any tool they are useless. Don't waste your time and money .

Pros
  • spare insert holder
Cons
  • vanishing