Tools & Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Drill Bits > Step Drill Bits
LWJ-164 HSS Step Drill Bit Set
Brand: Generic / OEM
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Audited BOM: 3 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
Inconsistent heat treatment (ENG-001) compromises the hardness and strength of the HSS, leading to premature breakage (RMA-001) and loss of edge (RMA-003), as reported by users (REV-001, REV-003, REV-005).
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