HQS For di cult-to-cut materials/ Stainless steel machining Special two-step bottom and double margin Improving stability of difficult-to-cut materials and stainless steel during machining operations Drilling diameter ø8.00 ~ ø19.5 PR1535 FTP For counterboring Solves problems at counterboring Improved hole accuracy with pilot point geometry and double margin specifications Drilling diameter ø8.00 ~ ø25.4 PR1535 PR1525 Optimized chip thinning for stable chip evacuation Support groove with wider flute (5D, 8D and 12D) enables smooth chip evacuation P3 Chamfering attachment For SS Type 2
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