Power springs also known as clock springs, are made of steel strips, formed by specialized spring-forming machines.
Power springs can store and release rotational energy in the form of torque via the center arbor or spring housing. The torque increases throughout the total winding process.
Power springs feature less room required with power torque, and the number of turns can be up to 50 cycles. This feature made it wildly used in cables, hoses, etc.