5/16" x 6" x .042" WG Steel Extension Springs

Diameter: 5/16"
Diameter 2: .042"
Length: 6"
Material: Spring Steel
Nominal Size: SRM75
Type: Extension Spring
WireDiameter: .042 WG

Box of 6.

Extension springs are wire coils designed to become longer under load. Their turns are normally touching in the unloaded position, and they have a hook, loop or some other means of attachment at each end.