The most versatile hole-cutting tool for rapid drilling and enlarging holes in thin materials up to 14 gauge.Designed for industrial applications, the diameter of the hole increases as the CONECUT is advanced into the material, providing infinitely variable sizes.For use in sheet steel, non-ferrous metals, plastics, Formica and plywood.For imperial/metric, unless otherwise specified, Conecut with a steam tempered blue surface treatment, which is advantageous in many applications will be supplied. However, should it be required, all imperial/metric tools can be supplied with bright ground finish on body and paint.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.ALWAYS USE WHEN DRILLING METALS.