1/2" x 3-13/16" x .040" WG Steel Extension Springs

Diameter: 1/2"
Diameter 2: .040"
Length: 3-13/16"
Material: Spring Steel
Nominal Size: SRM62
Type: Extension Spring
WireDiameter: .040 WG

Box of 12.

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.