The GastroMax box grater offers a different grating surface on each of its four sides. The coarse side is perfect for grating cheese or vegetables like carrots and zucchini. The medium size is ideal for grating potatoes or shredding apples. The fine side works well for zesting citrus or grating hard cheeses like Parmesan. The slicer is great for thinly slicing vegetables like cucumbers. The sturdy and durable grater is made of stainless steel. Dishwasher-safe for easy cleaning.