https://alexnld.com/product/5pcs-creality-3d-8-25mm-leveling-spring-for-cr-10s-pro-cr-x-3d-printer-extruder-heated-bed-part/?hilite="Creativity MK8 Remote Metal Kit Extruder Leveling Spring MK8 Silicone Socks PETG Tube for Ender 3 CR10/10S"