Features 1、SIMPLY PLUG TO USE: No need to modify the machine, solder, or replace the motherboard. Simply plug the one for two motor cable into the motherboard 2、IMPROVE STABILITY: The upgrade cost is low, and the gantry type 3D printers such as for Ender3 3S are upgraded to dual Z axes to improve the stability of the printer 3、STABLE OPERATION: Using aluminum alloy coupling and original 42 stepper motor, which guarantees stable operation 4、HIGH STRENGTH: Stainless steel material have corrosion resistance, heat resistance, high temperature resistance and ultra low temperature resistance, good comprehensive mechanical properties and high strength 5、EASY TO INSTALL: Dual Z axes kit contain various accessories, convenient for you to install, easy to operate Specification Item Type: Dual Z Axes Kit Product Material: Stainless steel + aluminum alloy Product Color: Black Purpose And Function: Upgrade the gantry type 3D printer such as for Ender3 3S to dual Z axes to improve the stability of the printer Package List 1 x 42-34 Stepper Motor 2 x Bearing Holder 1 Set of Power Supply Holder(2pcs) 1 x Coupling 1 x Fixed Metal Plate 1 x Motor Wire 1 x Motor Mount 1 x Screw Rod 2 x Hex Wrench 14 x Screw 6 x Nut 3 x O Type Gasket 1 x Adapter 1 x Screwdriver 1 x User Manual