The A1903 drill set contains 21 A100 drills of different fractional diameters in a handy plastic case which makes selecting the required drill size very simple. The drills in the A1903 are Dormer?s best selling A100 jobber drills with a conventional 118 degree point which provides strength and means the point is easy to regrind, making it a very cost-effective drill. Suitable for both hand held and machine drilling in a number of applications, the A100 from Dormer has a steam oxide finish which helps stop work piece material from sticking to the cutting edge of the drill and is suitable for drilling many materials including steels, aluminium and stainless steels. With the patented silver ring on all Dormer A100 drills from 1/4 inch and above giving you confidence to know this is a genuine Dormer drill, the A1903 is a great starter set for your fractional drilling needs. *Note: all drills below 1mm are bright.