COBALT TiAlN Coated Spiral Flute Step Drill | Bordo Size:12x1mm so blades for these materials

so blades for these materials have a much harder metal bond to resist this abrasion

Includes five blades and a PH2 insert bit inside handle

Diamond blades do not cut

GCM 12 GDL

COBALT TiAlN Coated Spiral Flute Step Drill | Bordo Size:12x1mm so blades for these materialsHSS Co5 SPIRAL FLUTE TiAlN COATED STEP DRILLS Bordo Cobalt Spiral Flute Titanium Aluminium Nitride (TiAlN) coated step drills offer unparalleled performance when drilling hard metals such as stainless steel. HSS Co5 material provides increased performance and tool life when machining tough steels. High performance point for faster starting and reduced bit wander. 3 flatted shank prevents slipping in drill chuck. Spiral flutes enable easier tool