Irwin Unibit Step Drill 6–18 mm x 2 mm, 3 m

The Irwin Unibit is a precision step drill designed for drilling clean, round holes in thin materials including mild steel, copper, brass, aluminium, plexiglass, wood, and laminates. The single-fluted cutting edge and self-centering point eliminate the need for centre punching and prevent walking, while the flattened shank resists slipping in the chuck. Ideal for sheet metal workers, HVAC technicians, electricians, and fabricators who require accuracy and repeatability in thin-material drilling.