The wire is inserted into the opening and held in place by a metal spring.

The 'power source' appears to be an array of metal springs.

M and S said yesterday a coiled metal spring was a 'potential hazard' to customers.

Some bindings replaced the cable with a long metal spring instead, combining the two functions.

There was an air about him of a metal spring, compressed, waiting.

A metal spring fixed around the edge of the rim rolls inward to fit inside the glass.

All that remained of the couch that had been set on fire were the metal springs.

Along the way of the course would be three stations where a key is suspended in the air on a metal spring.

Both metal springs and rubber bushes can be used to provide suspension.

The cord around her right wrist snapped with a sharp sound, like a metal spring failing.