Features: Package Includes: 4pcs hand twist leveling nut, 4pcs hot bed springs and 1pc extruder. Suitable for Ender 3/3 Pro, Ender 5/ 5 Pro, CR-10, CR-10 V2, CR-10 V3,CR-10 Max, CR 10, CR-10 Mini, CR-10S, CR 10S Pro, CR 10S Pro V2, CR-10 Plus. Make the hot bed become more stable. Large size leveling metal nuts will make it easier to level printing platforms. The hand twists are made of premium metal material, durable and sturdy. Easy to install and remove. These small upgrades and helped improve your print quality a lot. Specification: For: Ender 3/3 Pro, Ender 5/ 5 Pro, CR-10, CR-10 V2, CR-10 V3,CR-10 Max, CR 10, CR-10 Mini, CR-10S, CR 10S Pro, CR 10S Pro V2, CR-10 Plus Material: Metal -Hand Twist Leveling Nut Screw Nut Diameter: About 60mm -Yellow Spring Outside Diameter: 10mm Spring Length: 25mm Package Size: 10 x 15 x 3cm/4 x 5.9 x 1.1in Package Weight: 180g/6.3oz Packing List: 4 x Hand Twist Leveling Nut 1 x Extruder 4 x Spring