Three piece stepped cone drill set manufactured from high speed steel, resulting in long tool life and extra durability. | | Features and Benefits | • Three piece stepped cone drill set – each step produces specific sized, parallel holes, with the maximum material thickness being determined by the length of step | • Manufactured from high speed steel | • Long tool life and extra durability | • Designed for use with power tools or pedestal drilling machines and a extensive range of industrial applications | • The drills can produce or enlarging holes in sheet metals without the need for centre punch or pilot holes | | Typical Applications | • Drilling | • Hole enlargement | | Notes | Contents: | • 4 – 12mm (9 step, 6mm shank) | • 4 – 20mm (9 step, 8mm shank) | • 4 – 30mm (14 step, 10mm shank) |