Cobalt-coated high speed steel drill bits stay sharper longer for extended drill life. The 135 split point is self-centering, quick starting and highly accurate. Case Included Yes, Includes qty. 21, Size From 1/16 in. to 3/8 in. in 1/64 in. increments, Finish Type Cobalt-coated.
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Customer Reviews for FREE SHIPPING - Northern Industrial 135?? Cobalt-Coated Drill Bits - 21-Pc. Set
Review 1 for FREE SHIPPING - Northern Industrial 135?? Cobalt-Coated Drill Bits - 21-Pc. Set
Works, but not with steel
October 19, 2009
These drill bits work fine, however when I tried to drill through some 10 gauge steel, the bit wouldn't do anything at all. My 10 year old black oxide bits did the job much better. I bought the Cobalt ones thinking they would be better for heavy duty use, so I am disappointed in their performance. If you using these for light weight use in softer materials, they are fine.