Simply place any ground meat on the patty-forming tray, close the lid, and press the patty presser button down to compact the meat into perfect patties of any thickness up to 1-1/2". Nonstick coating. Constructed of heavy-duty aluminum. Adjustable patty thickness up to 1-1/2" with a 4-3/8" diameter. Markings on the handle make adjusting patty weight easy. Helps ensure that patties will not fall apart on the grill. Quick and easy clean-up.