Quick-Release Step Drill Bits from 7MÊÓƵ have dual spiral flutes for faster cutting, durable aluminum titanium nitride coating for longer life, and are impact-rated for use with standard drills or impact drivers. Learn more at /³¦²¹³Ù²¹±ô´Ç²µ/»å°ù¾±±ô±ô¾±²Ô²µ-²¹²Ô»å-³ó´Ç±ô±ð³¾²¹°ì¾±²Ô²µ/²õ³Ù±ð±è-»å°ù¾±±ô±ô-²ú…
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