Oh My Grill Button Thermometers, 4-inch, Set of 4 4-Piece set of meat grilling thermometers: 2 beef, 1 poultry, 1 pork Made out of rugged stainless steel and are safe for being left in the grill or the oven Big, simple marks for determining which way you prefer your food cooked or grilled: well, medium, rare, medium rare, and minimum Dial on the thermometers are glow in the dark for night or low light grilling