application of the HSS Drill Bit type Sizes of metal drilling: 4-12, 4-20, and 4-32 mm flute type Complete Hex Shank process with straight flute shank 300,000 cartons, sets, pieces, or boxes of ground material HSS or Cobalt M35 point degree 135 degree Split Point surface finish Titanium coated are available each month. Set 40*25*18 for length, width, and height.