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Bosch Cobalt Twist Drill Bit Set 21 Piece

Bosch® cobalt M42 metal drill bits are engineered with upgraded M42 alloy, containing 8 percent cobalt. These hard-core cobalt bits deliver ten times the life...

Bosch 25 Piece HSS-Co Drill Bit Set

The HSS Twist Drill Bit Cobalt provides long-lasting performance when drilling stainless steel. This extended lifetime results from a cobalt alloy content of 5% and...