Prime-Line products has been supplying repair and replacement parts for windows and doors. These extension springs from Prime-Line are constructed from 0.080-gauge, heat-tempered, spring steel wire plated in a bright nickel finish. They offer superior strength and long lasting tension. These springs feature a single loop, open-ended design. This type of spring can be used on toys, equipment, tools and for a variety of other household applications.Brand Name: Prime-Line Length: 1-5/8 in. Diameter: 1/2 in. Spring Type: Extension Product Type: Spring Number in Package: 2 pk Packaging Type: Bagged Material: Steel Finish: Nickel-Plated End Type: Single Loop, Open Wire Gauge: .080