Features: Package Includes: 4pcs hand twist leveling nut, 4pcs hot bed springs, 4pcs heatbed silicone leveling column mounts and 1pc extruder kit. Widely compatible with 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: Compatible Model: 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 Screw Nut Diameter: About 60mm Spring Outside Diameter: 10mm Spring Length: 25mm Silicone Leveling Column Mount: 4mmx16mm(IDxOD), Height: 18mm Package Size: 18x12x3.5cm/7x4.7x1.3in Package Weight: 210g/7.4oz Packing List: 4 x Hand Twist Leveling Nut 1 x Extruder Frame Kit 4 x Spring 4 x Heatbed Silicone Leveling Column Mount