Extension springs are important components in various mechanical systems, providing the force needed to extend and retract parts. They come in a variety of types and designs, including Extension springs with loop ends, extension springs with hook ends, and custom extension springs. These springs are designed to absorb and store energy, releasing it when the spring is extended or pulled.

 As the name suggests, stiff coil springs are characterized by high stiffness and resistance to compression. These springs are commonly used in heavy machinery, agricultural equipment, and industrial tools that require high load-carrying capacity and minimal deformation.