3d Printer Parts Hot Bed Leveling Nut Springs Assorted Leveling Spring Knob
All you have to do is hooking everything up. 4 x Leveling Nuts 4 x Compression Springs 4 x Screws. -Type: compatible with CR-10/Ender 3 3D printers. High Thrust Electromagnet Actuator Linear 12V Magnetic Solenoid.