A350 drill is a long series drill bit with a taper shank. It is recommended for drilling deep holes or for applications where increased reach is required. The A350 has a steam oxide finish which stops work piece material from sticking to the cutting edges, whilst the 118 degree point angle means the point which is easy to regrind but also provides strength. The drills are manufactured from High Speed steel and can be used to drill a wide variety of material including aluminium, stainless steel and steels. These taper shank drills come in a wide range of metric sizes and can be held directly in the spindle which makes them very versatile.