20Pcs/lot 3D Printer Motherboard Compression Springs 8x20 mm for Creality CR-10 Ender 3 Heatbed Springs Bottom Connect Leveling
https://www.vogueparade.com/shopping/EN/4003/1/1005003160030135/20pcslot-3d-printer-motherboard-compression-springs-8x20-mm-for-creality-cr-10-ender-3-heatbed-springs-bottom-connect-leveling//