Features:Auto leveling nuts for 3D printers, 4pcs/ pack. Made of high quality aluminum, durable and long time to use. Compatible with Creality CR-10/ CR-10s/Mini Ender 3 3D printers. Upgraded hand aluminum twist leveling nut for hot bed and make the hot bed become more stable. Easy to install and remove, no tools required. Package Includes:4pcs Hotbed Yellow/Blue Spring4pcs M3X35 Screws 4pcs M3 Nuts Specifications:Item Type: Leveling ModulesModel Number: MK3Color:Yellow/BlueWeight: 53gSize: Approx 4.5cm/ 1.77in:8mm Inside diameter:4mm Length :20mm note:Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand.Please allow 0-2mm error due to manual measurment. Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience.