This Mibro 1/2 in. Diameter Cobalt Steel Drill Bit is a perfect addition to your tool set.
135 degree split point
3/8 in. reduced shank
Manufacturer Part Number
Mibro 1/2 in. Diameter Cobalt Steel Drill Bit is rated
1.0 out of
Rated 1 out of
frustrated driller from
poor performancei bought the more expensive bit after the one that was supposed to last 6 times longer than regular took 15 minutes to drill thru 1/4" of steel. The more expensive bit never made it thru at all on the next hole. It took 30 minutes and 3 bits to drill one hole, even with the high dollar bit
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