• Dedicated drill for each fixture length
  and diameter

• Stopper drill with 1mm margin

• Shank O-ring color shows the
  fixture diameter
   F3.5:Yellow, F4.0: Green, F4.5: Blue,
   F5.0: Red, F6.0: Purple

• Recommended speed : 800 to
  1200 rpm

• F = Fixture (nominal diameter size)