Flexible spring is made of plating finished metal that provides extra durability for the right amount of tension, finish for extra protection against harmful rust and corrosion.Our springs are mainly for household use, mainly for small products. The tension of the spring is not very large and it is easy to install.The Extension Springs give resistance to a pulling force and become longer under load.Feature Hook ends, close-coiled, applications include balance scales, garage doors, washing machines and applications which requiring various types of tensioning devices.Specification:Product Name: Extension SpringMaterial: MetalPackage Content: 5 x Extension SpringsSize: 5 x 0.35cm/ 2" x 0.14"(L*D)Note:1. Due to the shooting and screen setting difference, the color of the item may be slightly different from the pictures.2.