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 .
Enhance Precision with OSCARBIDE Indexable Grooving Parting QA08R 20
3 Review
OSCARBIDE Indexable Heavy Duty Grooving Threading Cutting Tools
3 Review
AccusizeTools Indexable Carbide Turning Tool 2387 2003
3 Review
π§ Enhance Precision & Efficiency with Drill America HUT29 64Ths Index
8 Review