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Hole positioning is simplified with the self-centering drill tip reducing bit wander
Tru-plate fully hardened and tempered steel body is precision balanced to run truer
or tweak the grind angles
small production runs and when minimal material exists around the hole to be tapped
Manufactured from premium quality high speed steel with double fluted ground cutting edges for long service life
4-30mm 3 Pce Spiral Flute HSS Cobalt Step Drill Set Hole positioning is simplified with4 30mm 3 Pce Spiral Flute HSS Cobalt Step Drill Set HSS Co5 (Cobalt) Titanium Aluminium Nitride Coated (TiAlN) Spiral Flute Step Drill Set 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. Bordo step drills are ideal for electrical contractors,