The Official Creality 4Pcs Metal Leveling Nuts and 4Pcs Springs Upgraded Set is a high-quality upgrade kit designed for Ender 3D printers. Made in the United States, this branded set includes metal leveling nuts and springs to improve the performance and accuracy of your 3D printer. The package dimensions are 6.89x5.79x2.01 inches and the weight is 0.24 pounds, ensuring a compact and lightweight addition to your printer setup. Upgrade your 3D printing experience with this reliable and efficient leveling nut and spring set.