Features include: Precision CNC machined for faster, more efficient chip removal; Split Point tip for improved accuracy and control – penetrates surface on contact and prevents drill bit “walking”; Heavy-duty web improves strength and structural stability; Flatter web taper for more consistent chip evacuation; High helix enhances lift and reduces chip turbulence; Parabolic, wide flutes for superior performance in deep-hole drilling; Tri-flat shank on 3/16″ through 1/2″ drill bits; Industrial-grade NAS High Speed Steel (HSS); Available in either 6 pack or 12 pack quantities (size specific). Material Applications: Aluminum, Copper, Brass, Plastic, Steel (Low & Medium Carbon); Steel Alloy. Proudly made in Ronan, Montana, USA!