Feature: 1. Upgraded dual z structure, provides smooth operation, and better performance. 2. High‑quality accessories, using all‑aluminum coupling and original 42 stepper motor, stable operation. 3. Made of high‑quality metal material, hard, wear‑resistant and longer service life. 4. Small, light in weight, easy to install, bring you more convenience, and improving good experience. 5. With other accessories, you don't need to spend money to buy it, which provides more convenience for installation. Specification: Condition: 100% Brand New.Item Type: Dual Z Axis Upgrade KitMaterial: Metal Plate, Aluminium AlloyColor: As the Picture ShownFunction: Upgrade for gantry type 3D printer such as for Creality 3DEnder3/3S to dual Z axis to improve printer stability. Package List: 1 x Motor2 x Z Screw Bearing Holder2 x Power Supply Holder1 x Coupling1 x Fixed Sheet Meta1 x Motor Wire1 x Motor Mount1 x Screw Rod14 x Screw9 x Nut2 x Hex Wrench1 x Hexagonal Key1 x Screwdriver Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.