One secret to great grilling is starting with a clean cooking grid. Big Green Egg's Nylon Bristle Grid Scrubbers feature heavy-duty, diamond-coated nylon bristles that easily and safely clean even the messiest cooking grids. If you use a traditional metal brush to clean your cooking grids, the metal bristles can possibly come loose and stick on the cooking grid. Diamond-coated nylon bristles are safe and durable and ensure that no metal bristles will ever end up in your food.