Irwin HSS Cobalt Drill Bit 3.5mm OL:70mm WL:39mm
1,91 €
Their 135 split point grinding ensures perfect centring and reduced drilling pressure. 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 and results in significantly extended life.
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