12 in 1 Upgraded Metal Leveling Nuts and Springs Screws for Ender 3/3 Pro/3 V2/3 Max Ender 3 Neo/Ender 3 V2 Neo Ender 5/5 Plus NOTE - The length of springs are about 25mm, which is slightly longer than the ender 3 series printers(Including ender 3/ender 3 pro/ender 3 v2). The springs need to cut them shorter than the original ones in order to adapt them to the printer or adjust the hot bed to be higher to fit the springs. Suitable for - Upgraded aluminum hand twist level nut are original upgraded replacement part for Ender 3/3 Pro/3 V2/3 Max, Ender 5/5 Plus/ 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, CR-X, CR 20. Metal Material - Metal material is stronger, it will twist more tightly than plastic nuts. Easy to use - The torque of these nuts is large, making it easier to fine tune the hot bed. Quality - Made by high quality aluminum, last much longer your stock plastic nuts. Package include: 4pcs nuts+4pcs springs+4pcs screws About the shipping way (please choose your best shipping way when you placed the order) 1. Cainiao Super Economy Global -----this is the cheapest shipping way, but also has the long shipping time normally about 30-60days 2.SaverShipping-------------this is the most compatiive shipping way, shipping time about 20-35days 3. Standard Shipping--------this is the most safe and fast shipping way, shipping time about 15-25days