Spring are mechanical devices that store and apply kinetic energy. They’ve been around a long time and continue to play essential roles in a wide range of machines, vehicles, and engineering tools.

Spring-loaded plungers use a spring and a plunger (or ball tip) to exert a precise and repeatable force. They are a better option than having engineers cobble together an assembly that uses a simple, ...

Kaitlin Clapinski is a Los Angeles-based News and Deals Commerce Writer at InStyle, covering everything from celebrity style to fashion and beauty news. She swears she has a sixth sense when it comes ...