Prime Line Prod. Century Spring Compression Spring - Single Pack. Single Pack of Prime Line Prod. Century Spring Compression Spring. These Handyman Compression Springs by Prime-Line Products are constructed of durable spring steel, and they come finished in a beautiful, corrosive-resistant, nickel-plated finish. Compression springs like these are used for a variety of household and professional applications. The outside diameters, lengths and gauge thicknesses vary between each of these springs, while their dependability does not. Use these springs for repairs around the house, in the office, vehicle, garage and in many other applications. No. C-550: Length: 1 In., Diameter: 3/16 In., Gauge: .016 In., Pkg Qty: 6, Package Type: Bag No. C-576: Length: 1-3/8 In., Diameter: 5/32 In., Gauge: .016 In., Pkg Qty: 6, Package Type: Bag No. C-600: Length: 1-3/8 In., Diameter: 7/32 In., Gauge: .020 In., Pkg Qty: 4, Package Type: Bag No. C-806: Length: 3-1/4 In., Diameter: 1-1/2 In., Gauge: .120 In., Pkg Qty: 1, Package Type: Bag WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. WARNING: California Prop 65 - www.P65Warnings.ca.gov.