Spring Sizes:
0.31inch/8mm Outer Diameter
0.16inch/4mm Inner Diameter
0.98inch/25mm Free Length

Of all the mold springs in color, yellow is the one with the lightest load. However, since die springs are well suited for high-stress applications, they are also suitable for a variety of other applications as well.
Compatibility:
Fit most 3D Printer beds, great replacement for Creality Ender 3, Ender 3 Pro, Ender 3 V2, Ender 3S, Ender 3 Max, CR-10, CR-10S, CR-10Mini 3D Printer bed springs, can avoid leveling the bed every time before printing. And fit die machinery or other applications.
Note: the 3D Printer bed springs length is 0.98in/25mm, which is longer 5mm than for ender 3 series 3D Printers bed springs (Including ender 3/ender 3 pro/ender 3 v2), when used for ender 3 series, need to raise the 3D Printer Z-axis limit switch a little in order to level the bed, you may have a 0.6-3mm less printing space in height but that can be solved by lowering the model in your choice of the slicer.

Package Included:
6 pcs x 3D printer bed springs