#black cobalt m

Hymnorq Metric M8 x 1.25 Combination Drill and Tap Bit, Black TiAIN Finished M35 Grade HSS-Co, Quick Change 1/4" Hex Shank and Self-Centering Split Point, for Aluminum Brass Iron Stainless Steel

Hymnorq Metric M5 x 0.8 Black TiAIN Finish HSS Co M35 Drill and Tap Combination Bit with 1/4" Hex Shank and Self-centering Split Point for Aluminum Iron and Stainless Steel