What is the function of the safety pin?

The safety pin is a fastening device that consists of a metal pin with a coiled spring and a clasp to secure the pin in place. Its primary function is to hold together pieces of fabric or other materials, making it useful for clothing alterations, securing bandages, or temporarily fastening items. The design ensures that the sharp end is safely tucked away, reducing the risk of injury. Overall, the safety pin offers a simple and effective solution for quick and secure fastening.