M35 HSS-CO Cobalt Countersink Drill Bit 1/4 Inch Hex Shank 90 Degree HRC89 TiAlN Coated Deburring

M35 HSS-CO Cobalt Countersink Drill Bit 1/4 Inch Hex Shank 90 Degree HRC89 TiAlN Coated Deburring

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