Features Manual Leveling Nut Set: This set includes upgraded version manual rotation leveling nuts, screws and springs, make the heated bed more stable Large Size Leveling Nut: The size of the leveling nut is larger, make the leveling work easier, improves the efficiency Upgraded Strong Spring: Upgraded rectangular strong spring makes the heated bed is more flat, prolongs the service life ABS and Steel Material: This leveling nut kit is made of high quality ABS and steel material, with high strength and good wear resistant, has long service life Application: This hand leveling nut set is applicable for Anet A8, for ET4PRO, for ET5, for Creality Ender 3 and other models Specification: Item Type: Heated Bed Leveling Nut Nut Material: ABS Other Material: Steel Application: Applicable for Anet A8, for ET4PRO, for ET5, for Creality Ender 3 and other models Package List: 4 x Heated Bed Leveling Nut 4 x Screw 4 x Spring Package List 4 x Heated Bed Leveling Nut 4 x Screw 4 x Spring