Feature:1. ACCURATE WITH SIMPLE ASSEMBLY: Dual Z structure runs smoothly and improves accuracy. Support simple assembly, no additional tools required2. LONG SERVICE LIFE: Good quality materials and careful workmanship give this upgrade kit a long lifespan, very practical3. STABLE OPERATION: Adopt aluminum alloy coupling and original 42 stepper motor, which guarantees stable operation4. HIGH PERFORMANCE STAINLESS STEEL: Stainless steel material have corrosion resistance, heat resistance, high temperature resistance and ultra low temperature resistance, good comprehensive mechanical properties and high strength5. EASY TO INSTALL: Dual Z axes kit contain various accessories, convenient for you to install, easy to operate, very practicalSpecification:Item Type: Dual Z Axes KitColor: BlackProduct Material: Aluminum alloy, stainless steel, ABSScrew: T8 lead approx. 2mm / 0.08in screwScrew Length: Approx. 515mm / 20.28inAdaptation: For CR10 series 3D printer.Package List:1 x Screw Bearing Guide1 x Coupler1 x Z Axes Bracket1 x Stepping Cable1 x Z Axes Motor Bracket1 x Screw Rod1 x Motor7 x Nut9 x Screw3 x Solenoid1 x Wrench1 x User Manual