Features: brand new and high quality brand new and high quality High Quality Material: Made of high quality alloy, stable, firm and durable. Stepper motor: suitable for Nema17 42BYG Stepper. Screw: T8 stainless steel screw, lead 8MM, POM anti-backlash nut. Application: Good performance, convenient and practical, suitable for home and professional use. Lightweight Size: Portable and small size, easy to store and carry, bring you convenience. Specifications: Material: Alloy Color: As the Picture Shows Product Dimension: approx. 155x132.5x61.5x135mm/6.10x5.20x2.42x5.31inches Net Weight: 1400g/3.09lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x 3018 Z-Axis Module