Erie Tools 12 Sheet Metal Pan and Box Brake with Adjustable Removeable Fingers 20 Gauge Erie Tools 12-inch pan and box sheet metal brake. This brake will bend sheet metal up to 12-inches wide. Maximum thickness is up to 20-gauge steel or 16-gauge aluminum. Bend angle from 0 to 135 degrees. Includes six (6) fingers for bending metal of different widths up to 12 inches. Mounts easily to bench top or work surface. Features removable gauge capacities for use on mild steel or aluminum. Width: 12 in. Bend Angle: 0° to 135° Capacity: 20-Gauge Steel (16-Gauge Aluminum) Fingers: 1 in. (2) 2 in. (2) 3 in. (2) Features removable gauge capacities for use on mild steel or aluminum.