CESFONJER 10 Pieces Heated Bed Springs OD 0.31 Length 0.78 Die Light Load Compression Spring for 3D Printer Creality CR 10S S4 Ender 3 Heatbed Bottom Connect Leveling

Advantage: the die springs are stiffer than ordinary spring, which help your 3D printer much more stable while printing Compatibility: compatible with most 3D Printer Bed, great for Creality CR-10 10S S4 Ender 3 Heatbed Springs Bottom Connect Leveling Size: hole diameter (OD): 0.31"/ 8mm; rod diameter (ID): 0.16"/ 4mm; length: 0.78"/ 20mm Additional instruction: generally speaking, there are yellow, blue, red, green, brown springs sorted by different load, WPERSUVV die spring is the YELLOW one, which is the lightest load one; the heatbed springs are well suited for high stress applications, but also suitable for various of other applications Note：there are many small parts in the package, for safety, please keep them away from children