These innovative step drills have been designed for use with Maxbor mag based drills. The unique design allows a number of popular hole sizes to be drilled with the one tool. These step drills offer a number of advantages over conventional drilling and cutting methods and can be used for many different industrial applications. 5 sizes are available for drilling from 8 to 48mm holes. General Engineering and Metal Fabrication Bridge and Highway maintenance Truck and Trailer manufacturing Construction and Railways Ship Building and Offshore Rigs Elevator Repair Maximum material thickness - 12mm