Prime-Line products has been supplying repair and replacement parts for windows and doors since 1978. These compression springs from Prime-Line are constructed, heat-tempered, spring steel wire plated in a bright nickel finish. They offer superior strength and long lasting tension. These springs measure 3 inch length by 1 inch diameter. Tempered spring steel wireOutside diameter: 1" length: 3" gauge: 120Nickel platedUsed for repairs around the home or business