Extra Imperial Punches and Dies to fit Imperial Hand Held Sheet Metal Hole Punch (G250) Different sizes available: 3/32 , 1/8 , 5/32 , 3/16 , 7/32 , 1/4 , 9/32 inch ====================== The hole punch and die heads produce perfectly round, burr free holes in up to 1.5mm (16g) steel and 2.5mm (12g) aluminium. When working along a panel edge just mark the pitch on your job then set the depth gauge on the hand punch up to 51mm (2-inch) deep, to produce lines of equidistant holes. Kit contains seven punch and die sets - 3/32\" , 1/8\" , 5/32\" , 3/16\" , 7/32\" , 1/4\" , 9/32\" .