12 Inch Slip Roll will handle your rolling needs up to 18 gauge steel. The Eastwood 12 inch slip roll is designed for use on sheet metal and wire up to 12 inches in width and 18 gauge in thickness. Create: Bends Cones Cylinders This unit will create gentle arcs, cones or cylinders, helping you create patch panels for rockers, roll pans, door skins and lower fender areas.