170pcs HSS Drill Bit Set in Steel Index with Bright Finished Description: 1. Material:HSS 4241,4341,6542,M35 2. Hardness:HRC 60-68 3. Process:Rolled,Polished,Fully Ground 4. Point:118/135 degree split ...View More
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Multipurpose 170pcs High Speed Drill Bits Kit For Metal Steel Drilling Holes