A wheel is a circular component that is intended to rotate on an axial bearing. Wheels are found in transport applications, such as car tires, steering wheels, train wheels, skate boards etc. Wheels are also used in pottery like pottery wheels. Wheels helped provide food, water, pottery and yarn. Tools and machines, drills, chainsaws, trolleys, taps and screws use wheels, roll-up window blinds rely on wheels; vacuum cleaners and lawn mowers are moved around on wheels, even a computer mouse is driven by a little wheel. Wheels are used in kitchen appliances, in mixers, blenders, the microwave oven tray which rotates to ensure even cooking, pizza cutter and scores of others.