Stainless steel construction,Non-slip rubber feet,Simple operation Tornado potatoes cutter: Simple operation,save more time Make twisted potato chips, tornado potatoes and veggie snacks with this stainless steel constructed potato slicer. It features a tornado or spiral shaped cutter that is great for home use or at a restaurant. This potato chips spiral cutter is a great product to use at home, restaurants and hotels. How to install: open the box and install the handle, push shaft up to adjust the distance between the knives and screw. How to operate: use the bamboo to stick the potato through the hole in front. The end of the bamboo is fixed into screw. Turning clockwise to cut the potato.