hole punch will cut two different sizes of holes in soft sheet metal, silver, gold, brass, copper, aluminium and even plastics. Can be used for metal up to 18 gauge. The punches are 1.6 mm (1/16”) and 2.0 mm (5/64”) in
diameter. To punch metal, insert it into the desire slot, and screw the punch
down until it punches through the metal. The hole punch tool is made of steel and
measures 4.5 x 1.5 x 0.38” (11.4 x 3.8 x 1 cm).