This HSS Cobalt series drill set includes 25 drill bits.
A protective metal case is included for organized storage.
Cobalt alloyed drill bits are manufactured from high quality HSS steel containing 5 percent Cobalt (Co) which improves the red hardness (heat resistance) and significantly extends bit life.
HSS Cobalt series drill bits are designed for drilling hard metals like stainless steel. 135-degree split point grinding ensures perfect centring and reduces drilling pressure.
Industrial quality ground flute allows for high accuracy drilling and fast chip removal.
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