Oil feed or Oil fed Drill Coolbor brand are unique with MTS ( Morse Taper Shank ) Long length with Spiral flutes with Internal Coolant Channels for carrying coolant directly to the cutting edge. Used on high production Beam Drilling Machines. Have longer tool life than any other drill in critical applications. For drilling tough material with 135 degree split/notched point style for deep hole continuous production drilling. British made in excellent 1st quality - Click on : 

 Oilfeed Drills Inch  to buy sizes from 1/8" to 13/32"

 Oilfeed MTS Drills Inch  from 3/8" to 1-3/4"

 Oilfeed MTS Long Drill Inch  from 1/2" to 1-1/2"