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.
π§ Accusize Tools Carbide APKT1604 0056 1604X10: Superior Quality and Precision Cutting Performance
3 Review
π§ OSCARBIDE CCMT21-51 CCMT060204 Multilayer Carbide Insert Replacement
431 CNMG 331 TNMG WNMG
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