Features: Package Includes: 4pcs hand twist leveling nut, 4pcs hot bed spring. Large size leveling metal nuts will make it easier to level printing platforms. Wide Compatibility: Suitable for CR series 3D printers such as CR-10 V3/CR-10S Pro V2/CR-30/CR-10 S4/CR20, and Ender series 3D printers such as Ender-3 V2/Ender-3 Pro-B/Ender-3-B/Ender-5 Pro, etc. The hand twists are made of premium aluminum alloy material, durable and sturdy. Easy to install and remove. Specification: For: CR-10 V3/CR-10S Pro V2/CR-6 SE/CR-10 V2/CR-10S/CR-10 Max/CR-10/CR-10mini/CP-01/CR20 Pro/CR-10 S5/CR-10S Pro/CR-X Pro/CR-30/CR-10 S4/CR20/CR-XB/CP-01/CR-6 Max/CR-X/CR-XB/CR-8S/CR-6 Pro/CR-10 S5 Pro/CR-Z2/CR-Z1/CR-H/CR20 ProB/CR-30L/Ender-3 V2/Ender-3 Pro-B/Ender-3-B/Ender-5 Pro/Ender-3 Max/Ender-5 Plus/Ender-6/Ender-5/Ender-3 Pro/KR/Ender-3S-B/Ender-2/Ender-5S/Ender-3 Pro Package Size: 15x15x5cm/5.9x5.9x1.9in Package Weight: 140g/4.9oz Packing List: 4 x Red Leveling Nut 4 x Mold Spring