Features: 1. Quickly and easily expand the engraving size: just replace the frame shaft of the ATOMSTACK series engraving machine, you can get a large engraving area of 850*410mm without purchasing any additional accessories to meet your large-area engraving needs. 2. High-precision original profiles of the same color: The expansion kit adopts the original metal profiles of the same color as the A5 Pro/A5 Pro+ series engraving machines, which expands the engraving area and ensures the stability and accuracy of the engraving machine. 3. Applicable models: ATOMSTACK A5 Pro/ATOMSTACK A5 Pro+/ATOMSTACK A5 20W etc. 4. High-precision production and quality: The extension shaft and cable have undergone rigorous testing , so that it keeps the same accuracy and stability as the engraving machine. Guarantee high-quality engraving and cutting. 5. There are other necessary accessories in the product list, including extension cables, belts, and ties. No need to purchase any additional accessories. Specifications: Product model: ATOMSTACK A5 pro/A5 pro+ engraving area expansion shaft Expanded ATOMSTACK A5 pro/A5 pro+ engraving size: 410x850mm/16.14x33.46" Packing weight: 1.2kg Packing size: 113*7*10cm/44.49*2.75*3.94" Notes: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. Packing List: 2 x Y-axis extension axis 1 x Extension cable 2 x 1.4m Extension belt 10 x Cable ties 1 x Installation manual