Feature:1. Die springs are primarily used in die machinery. For die springs, the yellow color here represents that the loading grade is a light load.2. Die springs are well suited for high-stress applications, they are also suitable for a variety of other applications as well.Specification:Color: YellowLoading Grade: Light LoadFree Length: 25 mm /0.98 inchOuter Diameter: 8 mm / 0.31 inchInner Diameter: 5 mm / 0.2 inchPackage Content:16 x Heated Bed Spring