IRWIN� 10502566 HSS Cobalt Drill Bit 11.0mm OL:142mm WL:94mm Impact Driver Comprises 22 adaptor rings and

Comprises 22 adaptor rings and five fine thread puller bars with thrust bearing hex

Each socket is manufactured from hardened and tempered chrome vanadium steel that's chrome plated for corrosion protection

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For heavy - duty use

IRWIN� 10502566 HSS Cobalt Drill Bit 11.0mm OL:142mm WL:94mm Impact Driver Comprises 22 adaptor rings andThe Irwin Metric HSS Cobalt Drill Bits are perfect for drilling stainless steel and other high alloys. Their 135 split point grinding ensures perfect centring and reduced drilling pressure. An industrial quality ground flute ensures high accuracy drilling and fast removal of chips. The drill bit body is manufactured from high quality HSS steel containing 5% Cobalt (Co). The added 5% Cobalt improves the red hardness (heat resistance) of the drill bit