Designed for industrial applications, each step produces accurate, parallel holes with a small clearance on the nominal diameter.The maximum material thickness is determined by the length of step (If the work piece can be reversed multiply thickness by 2).For use in industrial power tools or pedestal drilling machines.Helps maintain the sharpness of the cutting edge. Lubricity reduces torque and prevents undesirable material build up on the tool. Suitable for other metal cutting operations - thread cutting, normal drilling.