The GMC DFM-20 Diamond Forming Machine is ideal for making stainless steel diamond plate patterns for truck doors, catering trucks, kitchens, toolboxes and more. A 4” x 4” diamond embossed pattern for stainless steel comes standard with the machine with different sizes and patterns available as options. The DFM-20 has a max. sheet width of 50″ with a max. capacity of 20 ga.