4 of these bits broke about 1/3 inch from the cutting edge. There were no chips either, the material liked to roll over the drill bit. Bit geometry is said to be poor and I wasn't impressed with mostly pretty junk.
431 CNMG 331 TNMG WNMG
3 Review
OSCARBIDE Carbide Turning TCMT090204 Replacement
4 Review
π Climax Metals TC 038 10 Drill Center: High-Precision Tool for Accurate Drilling
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πͺ DEWALT DW3984C Portable Blade Set of 3-Pack
10 Review
Olson 80 Inch Blade FB14580DB-025
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POWERTEC 62-Inch 8-Inch Blade - Model 13132X
12 Review