99 Piece Cobalt M35 HSS Drill Bits Set 1-10mm Bit High Quality DIN 338 Motamec

High quality manufactured HSS M35 5% Cobalt drill bits, suitable for drilling mild steel, stainless steel, alloys, wood, plastics etc. Cobalt (HSCO) drill bits are much harder than HSS as it includes 5% Cobalt blended into the base material and therefore can be more brittle.

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