4 set M4 Screws Auto Leveling Nut Spring Screw

Features: Auto leveling nuts for 3D printers, 4pcs/ pack. Compatible with Creality CR-10/ CR-10s/ mini ender 3 3D printers. High-quality plastic material, durable and sturdy. Easy to install and remove, no tools required. Note: It's not suitable for Creality CR-10 S4 or S5. Spring specifications: Color: Blue/Yellow Outside diameter:8mm Inside diameter:4mm Length :25mm