Drill Bit Fox Hss R/F STD 5 piece are drill bits made from Hss (hi-speed steel) and is precision fully ground at 135* with a split point. This drill bit can be used to drill materials such as iron, steel, non-ferrous metals and plastics. The drill bits are re-sharpenable several times. These drill bits are designed to cut metal. The split point adds 2 extra cutting edges with the advantage of reducing the amount of pressure required to perform the cut.