Combination Drill/Reamers are spiral fluted, end cutting tools designed to act as both a tool for creating holes and reaming the holes to a precise size and smooth finish in a single operation. Chucking reamers have round, straight shanks which can be mounted in chucks, collets or similar toolholders and may be used with a variety of standard portable or stationary machines such as drill presses, turret lathes and screw machines. Drill and Reamer Combination tools have deep flutes for proper chip removal, and produce accurate holes with tolerances of ±.0001" in a variety of ferrous and non-ferrous materials. Jobbers Length or Taper Length models available. Suitable cutting oils or appropriate coolant fluids are recommended for most reaming operations.