What machine element is located in the center of fidget spinners?

The machine element located in the center of fidget spinners is bearings. Bearings are an essential component that allows the spinner to rotate smoothly and efficiently. They consist of small metal balls or rollers that are placed between two rings in order to minimize friction and facilitate movement. Bearings are designed to support axial and radial loads, enabling the spinner to spin effortlessly and maintain stability. Overall, bearings play a crucial role in the functionality of fidget spinners by providing the necessary support and reducing the resistance between the spinning parts.